General Knowledge | Commercial Drivers License

Question 1 of 315

1 points

To prevent a load from shifting, there should be at least one tie down for every _____ feet of cargo.

10
15
7

Question 2 of 315

1 points

You are driving a 40-foot vehicle at 35mph. The road is dry, and visibility is good. What is the least amount of space you should keep in front of your vehicle to be safe?

2 seconds.
4 seconds.
6 seconds.

Question 3 of 315

1 points

Which of these statements about drinking alcohol is true?

A few beers have the same effect on driving as a few shots of whiskey or a few glasses of wine.
Coffee and fresh air will help a drinker sober up.
Not everyone who drinks is affected by alcohol.

Question 4 of 315

1 points

While driving, ice builds up on your wipers and they no longer clean the windshield. You should:

Keep driving, and turn your defroster on. Drive slower until you can see again.
Keep driving, and spray the windshield with washer fluid.
Stop safely and fix the problem.

Question 5 of 315

1 points

Which of these statements about driving in areas with strong winds is true?

Winds are a big problem when a truck comes out of tunnels.
You should drive alongside other vehicles to help break up the wind.
The lighter you vehicle, the less trouble you will have with the wind.

Question 6 of 315

1 points

What is counter-steering?

Steering in the opposite direction from what other drivers expect you to.
Turning the wheel in a counterclockwise fashion.
Turning the wheel back in the other direction after steering to avoid a traffic emergency.

Question 7 of 315

1 points

To help you stay alert while driving, you should:

Schedule trips for hours you are normally asleep.
Take cold medicine, if you have a cold.
Take short breaks before you get drowsy.

Question 8 of 315

1 points

You do not have a Hazardous Materials Endorsement on your Commercial Driver’s License. You can drive a vehicle hauling hazardous materials when:

The cargo will be transported less than 100 miles.
The vehicle does not require placards.
A person who has the Hazardous Materials Endorsement rides with you.

Question 9 of 315

1 points

Cargo inspections:

Are most often not the responsibilities of the driver.
Should be performed as part of your pre-trip inspection, again within the first 50 miles of your trip, then again after you have driven 3 hours or 150 miles, and after every break you take during driving.
Are needed only if hazardous materials are being hauled.

Question 10 of 315

1 points

Retarders:

Cause extra brake wear.
Allow you to disconnect the steering axle brakes.
Can cause the drive wheels to skid when they have poor traction.

Question 11 of 315

1 points

You are driving a new truck with a manual transmission. What gear will you probably have to use to take a long, steep downhill grade?

The same gear you would use to climb the hill.
A lower gear than you would use to climb the hill.
Shift into neutral and coast.

Question 12 of 315

1 points

Which of these statements about speed management is true?

Empty trucks always stop in shorter distance than fully loaded ones.
When you double your speed (go twice as fast), it will take twice the distance to stop.
You should choose a speed that lets you stop within the distance that you can see ahead.

Question 13 of 315

1 points

Which of these best describes how you should use the brake pedal on a steep downhill grade?

Snubbing.
Repeated strong pressure, then release.
With stronger pressure as the vehicle goes downhill.

Question 14 of 315

1 points

Which of these statements about double clutching and shifting is true?

Double clutching should not be used when the road is slippery.
Double clutching should only be used with a heavy load.
You can use the tachometer to tell you when to shift.

Question 15 of 315

1 points

Which if these statements about using turn signals is true?

You do not need to use your turn signal when changing lanes in traffic on a fourlane highway.
When turning, you should signal early.
You should use your turn signal to mark your vehicle when it is pulled off on the side of the road.

Question 16 of 315

1 points

Which of these statements about cargo loading is true?

The legal maximum weight allowed by a state can be considered safe for all driving conditions.
State laws dictate legal weight limits.
If the shipper loads the cargo, the driver is not responsible for overloading.

Question 17 of 315

1 points

If your vehicle catches fire while you are driving, you should:

Park in an open area.
Park where a building or trees shelter your vehicle from the wind.
Increase your speed to put out the flames.

Question 18 of 315

1 points

You are checking your tires for a pre-trip inspection. Which of these statements is true?

Tires of mismatched sizes should not be used on the same vehicle.
Radial and bias-ply tires can be used together on the same vehicle.
A tread depth of 2/32 inch is safe for the front tires.

Question 19 of 315

1 points

You can see a marking on a vehicle ahead of you. The marking is a red triangle with an orange center. What does the marking mean?

It may be a slow-moving vehicle.
The vehicle is hauling hazardous material.
It is a law enforcement vehicle.

Question 20 of 315

1 points

An en route inspection should include checking for:

Tire overheating and brake overheating.
Cargo secured properly.
Both of these are correct.

Question 21 of 315

1 points

You are driving in the right lane of a four-lane, undivided road. You come over a hill and find a car stopped ahead in your lane. You do not have room to stop. The hill blocks your view to the rear. The shoulder is clear. Which of these is most likely the best action to take?

Steer into the left lane.
Steer to the right.
Use hard breaking and brace for collision.

Question 22 of 315

1 points

Where or when should you test the stopping action of your service brakes?

In the parking lot when the vehicle is not moving.
When the vehicle is moving at about 5 mph.
At a special Brake Testing Center only.

Question 23 of 315

1 points

Which of these is not part of the pre-trip inspection of the engine compartment?

Valve clearance.
Condition of hoses.
Worn electrical wiring insulation.

Question 24 of 315

1 points

Cargo covers:

Protect people from spilled cargo.
May be a safety requirement in some states.
Both of the Answers.

Question 25 of 315

1 points

High beams should be:

Used when it is safe and legal to do so.
Turned on when an oncoming driver does not dim his or her lights.
Dimmed at the time that you get within 100 feet of another vehicle.

Question 26 of 315

1 points

Which of these is the most important thing to remember about emergency braking?

Disconnecting the steering axle brakes will help keep your vehicle in a straight line during emergency braking.
If the wheels are skidding, you cannot control the vehicle.
Never do it without downshifting first.

Question 27 of 315

1 points

You must park on the side of a level, straight, two-lane road. Where should you place the reflective triangles?

One within 10 feet of the rear of the vehicle, one about 100 feet to the rear, and one about 200 feet to the rear.
One within 10 feet of the rear of the vehicle, one about 100 feet to the rear, and one about 100 feet to the front of the vehicle.
One about 50 feet to the rear of the vehicle, one about 100 feet to the rear, and one about 100 feet to the front of the vehicle.

Question 28 of 315

1 points

The road you are driving on becomes very slippery due to glare ice. Which of these is a good thing to do in such a situation?

Stop driving as soon as you can safely do so.
Downshift to stop.
Apply the brakes often to keep the linings dry.

Question 29 of 315

1 points

Which of these statements about tires and hot-weather driving is true?

The air pressure of a tire decreases as the temperature of the tire increases.
If a tire is too hot to touch, you should drive on it to cool it off.
You should inspect your tires every two hours or every 100 miles when driving in very hot weather.

Question 30 of 315

1 points

Your truck is in a traffic emergency and may collide with another vehicle if you do not take action. Which of these is a good rule to remember at such a time?

You can almost always turn to miss an obstacle more quickly than you can stop.
Stopping is always the safest action in a traffic emergency.
Leaving the road is more risky than hitting another vehicle.

Question 31 of 315

1 points

What should you do when your vehicle hydroplanes?

Accelerate slightly.
Counter-steer hard.
Release the accelerator.

Question 32 of 315

1 points

You are starting your vehicle from a stop. As you apply power to the driver wheels, they start to spin. You should:

Take your foot off the accelerator.
Press harder on the accelerator.
Try a lower gear.

Question 33 of 315

1 points

Stab Braking:

Should never be used.
Involves releasing the brakes only after the wheels lock up.
Involves steady pressure on the brake pedal without locking the wheels.

Question 34 of 315

1 points

It takes the body about ______ hours to get rid of the alcohol in four drinks.

2
4
6

Question 35 of 315

1 points

Cargo that can shift should have at least _____ tie-downs(s).

1
2
3

Question 36 of 315

1 points

If a straight vehicle (no trailer or articulation) goes into a front-wheel skid, it will:

Slide sideways and spin out.
Go straight ahead even if the steering wheel is turned.
Go to the right.

Question 37 of 315

1 points

Which of these statements about accelerating is true?

Rough acceleration can cause mechanical damage.
You should feel a “jerking” motion if you are accelerating your vehicle properly.
When traction is poor, more power should be applied to the accelerator.

Question 38 of 315

1 points

Which of these is a good thing to remember when crossing or entering traffic with a heavy vehicle?

Heavy vehicles need larger gaps in traffic than cars.
The best way to cross traffic is to pull the vehicle partway across the road and block one lane while waiting for the other to clear.
Because heavy vehicles are easy to see, you can count on other drivers to move out of your way or slow down for you.

Question 39 of 315

1 points

Which of these statements about staying alert to drive is true?

A half-hour break for coffee will do more to keep you alert than a half-hour nap.
There are drugs that can overcome fatigue.
Sleep is the only thing that can overcome fatigue.

Question 40 of 315

1 points

You are driving on a two-lane road. An oncoming driver drifts into your lane and is headed straight for you. Which of these is most often the best action to take?

Hard braking.
Steer to the right.
Prepare for impact.

Question 41 of 315

1 points

Which of these statements about engine overheating is true?

If your engine overheats within 20 miles of the end of your trip, you should complete the trip and then check the problem.
You should never shut off an overheated engine until it cools.
You should never remove the radiator cap on a pressurized system until the system has cooled.

Question 42 of 315

1 points

You are driving a truck with a manual transmission. You have to stop the truck on the shoulder while driving on an uphill grade. Which of these is a good rule to follow when putting it back in motion up the grade?

Keep the clutch slipping while slowly accelerating.
Use the parking brake to hold the vehicle until the clutch engages.
Let the vehicle roll straight backwards a few feet before you engage the clutch.

Question 43 of 315

1 points

A vehicle is loaded with most of the weight on the steering axle. What may result?

Hard steering and possible damage to the tires.
Better handling.
Too little traction on the steering axle.

Question 44 of 315

1 points

You are driving a 40-foot vehicle at 50 mph. Driving conditions are ideal (dry pavement, good visibility). What is the least amount of space that you should keep in front of your vehicle to be safe?

3 seconds.
4 seconds.
5 seconds.

Question 45 of 315

1 points

Which of these things is a good thing to do when steering to avoid a crash?

Apply the brakes while turning.
Steer with one hand so that you can turn the wheel more quickly.
Do not turn any more than needed to clear what is in your way.

Question 46 of 315

1 points

You are checking your wheels and rims for a pre-trip inspection. Which of these statements is true?

Rust around lug nuts may mean that they are loose.
Cracked wheels or rims can be used if they have been welded.
A vehicle can be safely driven with one missing lug nut on a wheel.

Question 47 of 315

1 points

You do not have a Hazardous Materials Endorsement on your Commercial Driver’s License. You are asked to deliver hazardous material in a placarded vehicle. You should:

Refuse to haul the load.
Take the placards off the vehicle.
Haul the load, but only to the nearest place where a driver with a Hazardous Materials Endorsement can take over.

Question 48 of 315

1 points

As the Blood Alcohol Concentration (BAC) goes up, what happens?

The drinker more clearly sees how alcohol is affecting him/her.
Judgment and self-control are affected.
The drinker can sober up in less time.

Question 49 of 315

1 points

If you need to leave the road in a traffic emergency, you should:

Try to get all wheels off the pavement.
Avoid braking until your speed has dropped to about 20mph.
Tap repeatedly on the brakes.

Question 50 of 315

1 points

Which of these statements about downshifting for a long downhill grade is true?

It should not be done with automatic transmission.
It allows engine compression and friction to help slow the vehicle.
The proper time to downshift is just after the vehicle starts down the hill.

Question 51 of 315

1 points

When looking ahead of your vehicle while driving you should look:

To the right side of the road.
As far as your peripheral vision can see.
Back and forth near and far.

Question 52 of 315

1 points

Escape ramps are:

Used to stop runaway vehicles.
Used to get out of a burning truck.
For combination vehicles only.

Question 53 of 315

1 points

Which of these statements about cold-weather driving is true?

An engine cannot overheat when the weather is very cold.
Windshield washer antifreeze should be used.
Exhaust system leaks are less dangerous in cold weather.

Question 54 of 315

1 points

When should you wear seat belts?

Anytime you are in a moving vehicle.
Only in states where law requires it.
Whenever you are hauling hazardous materials.

Question 55 of 315

1 points

Controlled braking:

Can be used while you are turning sharply.
Involves locking the wheels for short periods of time.
Is used to keep a vehicle in a straight line when braking.

Question 56 of 315

1 points

How do you correct a rear-wheel acceleration skid?

Apply more power to the wheels.
Counter-steer the steering wheel.
Stop accelerating.

Question 57 of 315

1 points

Which of these is NOT a good rule to follow when caring for injured at an accident scene?

If a qualified person is helping them, stay out of the way unless asked to assist.
Keep injured persons cool.
Move severely injured persons if there is a danger due to fire or passing traffic.

Question 58 of 315

1 points

For your safety, when setting out reflective triangles you should:

Carry the triangles at your side.
Hold the triangles between yourself and oncoming traffic.
Keep them out of sight while you walk to the spots where you set them out.

Question 59 of 315

1 points

Heavy vehicles must sometimes travel more slowly than other traffic. Which of these is NOT a good rule to follow when you are driving such a vehicle?

Signal other drivers when it is safe for them to pass you.
Stay to the right.
Turn on your flashers if it is legal to do so.

Question 60 of 315

1 points

The most important reason for being alert to hazards is so:

Accident reports will be accurate.
Law enforcement personnel can be called.
You will have time to plan your escape if the hazard becomes an emergency.

Question 61 of 315

1 points

Hydroplaning:

Cannot occur when driving through a puddle.
Only occurs at speeds above 50 mph.
Is more likely if tire pressure is low.

Question 62 of 315

1 points

If you are being tailgated, you should:

Increase your following distance.
Flash your brake lights.
Signal the tailgater when it is safe to pass you.

Question 63 of 315

1 points

Which of these statements about overhead clearance is true?

You should assume posted clearance signs are correct.
The weight of a vehicle changes its height.
If the road surface causes your vehicle to tilt toward objects at the edge of the road, you should drive close to the shoulder.

Question 64 of 315

1 points

Which of these is a good rule to follow when using a fire extinguisher?

Keep as close to the fire as possible.
tay downwind of the fire.
Aim at the base of the fire.

Question 65 of 315

1 points

While Driving, you see a small (1-foot square) cardboard box ahead in your lane. You should:

Steer around it with out making a sudden or unsafe move.
Brake hard to avoid hitting it.
Hit it with your vehicle to knock it off the road.

Question 66 of 315

1 points

Is it legal to drive with one fourth of a vehicles leaf springs broken or missing?

It doesn't make any difference as long as you go the speed limit.
Yes.
No.

Question 67 of 315

1 points

Which of these can cause a fire?

Loose fuel connections.
Under-inflated tires.
Electrical short circuits.
All the answers are correct.

Question 68 of 315

1 points

Dry bulk tanks and hanging meat:

Have low centers of gravity.
Do not require special care.
Are unstable loads.

Question 69 of 315

1 points

Which of the following should you NOT do in the event of hydraulic brake failure?

Shift up.
Use the parking or emergency brake.
Pump the brakes.

Question 70 of 315

1 points

To correct a drive-wheel braking skid you should:

Turn slowly.
Keep your foot off the clutch.
Counter-steer.

Question 71 of 315

1 points

Which of the following statements about tank vehicles is true?

All tank vehicles have some sort of bulkhead or baffle.
The term "tank vehicle" refers only to those vehicles having a permanently attached tank.
Special skills are required to haul liquid tanks.

Question 72 of 315

1 points

If you are driving a long distance, you should:

Stop often and take short breaks before you feel really drowsy or tired.
Take a short break once or twice during the trip when you are feeling tired or drowsy.
Avoid short breaks, but keep the window open.

Question 73 of 315

1 points

Which of the following is true about a vehicle with a high center of gravity?

The vehicle is less likely to tip over.
The cargo should be rearranged so that the heaviest parts of the cargo are under the lightest parts.
The vehicle is less dangerous on curves.

Question 74 of 315

1 points

To prevent skidding, you should:

Brake hard at all stops.
Turn the wheel sharply for all turns.
Adjust to conditions while driving.

Question 75 of 315

1 points

You should back and turn toward the driver’s side:

Unless you would have to drive around the block first.
So you can watch the rear of the vehicle by looking out the side window.
If you do not have someone to help you.

Question 76 of 315

1 points

When you check the condition of visible parts during your pretrip inspection, make sure that the __________ are secured against snagging, rubbing or wearing.

Primary and secondary safety cab locks.
Frame and cross members.
Airlines and electrical wiring.

Question 77 of 315

1 points

With a BAC of ___, most people lose consciousness, and some die.

.40
.16
.10

Question 78 of 315

1 points

The distance your vehicle travels from the time your eyes see a hazard until your brain recognizes it is called ______ distance.

Perception.
Reaction.
Braking.

Question 79 of 315

1 points

Which of these items is checked in a pre-trip inspection?

Whether all vehicle lights are working and clean.
Cargo securement.
Wiper blades.
All of these answers are correct.

Question 80 of 315

1 points

The “reaction distance” is the distance traveled from the time:

The brain tells the foot to push the brake pedal to the time the foot actually pushes the pedal.
The eyes see a hazard to the time the brain knows that it is a hazard.
The eyes see a hazard to the time the foot pushes the brake pedal.

Question 81 of 315

1 points

When driving a commercial vehicle with a height over 13 feet, you should:

If you aren’t sure a clearance is high enough, stop and make sure.
Not worry about the height clearance as long as you stay on the state or federal highways.
Assume all clearances are high enough.

Question 82 of 315

1 points

The purpose of a baffle is to:

Control the load surge.
Separate the load.
To keep expansion of load down.

Question 83 of 315

1 points

The new BAC (Blood Alcohol Concentration) for commercial drivers to be considered intoxicated when driving a commercial vehicle is:

.02
.06
.04

Question 84 of 315

1 points

Truck escape ramps:

Cannot be used by certain types of heavy vehicles.
Are designed to protect vehicles from damage.
Should not be used unless you have first tried all other ways to save your vehicle after brake failure.

Question 85 of 315

1 points

Which of these can cause the vehicle to skid?

Not enough weight on the front axle.
Over acceleration.
Turning too sharply.
All of these can cause a vehicle to skid.

Question 86 of 315

1 points

Which of these describes how you should use the brake pedal on a steep downhill grade?

Release the brake when you are 5 MPH below your safe speed, then let your speed come back up to your safe speed and repeat braking again, (bring you speed down 5 MPH below your safe speed.
With stronger pressure as the vehicle goes downhill.
Light steady pressure.

Question 87 of 315

1 points

An en-route inspection should include checking:

Cargo doors and/or cargo securement.
Tire temperature.
Brake temperature.
All of these should be checked.

Question 88 of 315

1 points

According to the driver’s manual, why should you limit the use of your horn?

It wears down the battery.
It can startle other drivers.
The horn is not a good way to let others know you're there.

Question 89 of 315

1 points

The amount of liquid to load into a tank depends on:

The weight of the liquid.
The legal weight limits.
The amount of liquid will expand in transit.
All of these are correct.

Question 90 of 315

1 points

You should use your mirrors to check:

Traffic gaps before you merge.
The condition of the tires and cargo.
Where the rear of your vehicle is while you make turns.
All of these are correct.

Question 91 of 315

1 points

Your brakes can get wet when you drive through a heavy rain. What can this cause when the brakes are applied?

Lack of braking power.
Trailer jackknife.
Wheel lockup.
All of these are correct.

Question 92 of 315

1 points

Which of these statements about using mirrors is true?

There are blind spots that your mirrors cannot show you.
You should check your mirrors twice for a lane change.
You should look at a mirror for several seconds at a time.

Question 93 of 315

1 points

To avoid a crash, you had to drive onto the right shoulder. You are now driving at 40 MPH on the shoulder. How should you move back onto the pavement?

Keep moving at the present speed and steer very gently back onto the pavement.
Come to a complete stop, if possible, before steering back onto the pavement.
Brake hard to slow the vehicle, then steer sharply onto the pavement.

Question 94 of 315

1 points

Which of these statements about managing space is true?

Smaller vehicles require more space to stop than larger ones.
When the road is slippery, you should keep much more space in front of your vehicle.
Many accidents are caused by drivers keeping too much space in front of their vehicles.

Question 95 of 315

1 points

You are testing the stopping action of service brakes on a hydraulic system. Which of these can mean there is a problem?

The brake pedal goes to the floor.
Stopping action is delayed.
The vehicle pulls to one side when the brake pedal is pressed.
All of these are correct.

Question 96 of 315

1 points

The distance that you should look ahead of your vehicle while driving amounts to about ____ at highway speed.

1/4 mile.
25 feet.
1 mile.

Question 97 of 315

1 points

Which of these statements about drinking alcohol is true.

Alcohol first affects judgment and self-control, which are essential for safe driving.
Statistics show that drivers who have been drinking have a much greater chance of being in a crash.
A driver can lose their license for driving while under the influence of alcohol.
All of these are true.

Question 98 of 315

1 points

On which fires can you use the “ABC” fire extinguisher?

Electrical fires.
Burning tires.
Burning cloth.
All of these are correct.

Question 99 of 315

1 points

Which of these is a proper use of vehicle lights and flashers?

Flashing your brake lights to warn someone behind you of a hazard that will require slowing down.
Turning on your headlights during the day when visibility is reduced due to rain or snow.
Flashing your brake lights to warn someone behind you that you're are going to stop on the road.
All of these are correct.

Question 100 of 315

1 points

Which of these tell you that cargo contains hazardous materials?

A four-inch, diamond shaped hazardous materials label on the container.
A hazardous materials placard on the vehicle.
Both of these answers are correct.
Neither of these answers are correct.

Question 101 of 315

1 points

If you are convicted for driving under the influence while driving a commercial vehicle, and this is your first offense, you will most likely get:

A fine of $500.
Probation for a period of one year.
At least a one-year suspension of your CDL.

Question 102 of 315

1 points

Some liquid tanks are divided into several smaller tanks by:

Regulators.
Bulkheads.
Baffles.

Question 103 of 315

1 points

Front-end header boards:

Block the forward movement of your cargo.
Protect you from your cargo in case of collision.
Both answers are correct.

Question 104 of 315

1 points

The height of the vehicle center of gravity is very important for safe handling. A high center of gravity means you are more likely to do the following:

Rollover.
Stop faster.
Get Stuck.

Question 105 of 315

1 points

The “load” means the following?

Specified pressure an air tire can carry.
The maximum safe weight a tire can carry at a specified pressure.
Neither of these answers are correct.

Question 106 of 315

1 points

Whether or not you load and secure your load yourself, you are responsible for:

Knowing your cargo is securely tied-down and covered.
Recognizing overloads and poorly balanced weight.
Inspecting your cargo.
All of these answers are correct.

Question 107 of 315

1 points

Which of these statements about downshifting for a long downhill grade is true?

The proper time to downshift is just after the vehicle starts down the hill.
It allows engine compression and friction to help the brakes slow the vehicle.
It should not be done with automatic transmissions.

Question 108 of 315

1 points

Medical certificates must be renewed every:

2 years.
9 months.
4 years.

Question 109 of 315

1 points

During a pre-trip inspection you discover an exhaust leak or power steering leak, you should:

Report the problem and make arrangements for another vehicle to use.
Go home because you shouldn't drive the vehicle this way.
Note the problem and continue your route.

Question 110 of 315

1 points

During what time in your pre-trip inspection of a school bus do you check the back emergency door? (to ensure it is closed.)

During step four (lights first half) the inside walk through.
Only during the operation inspection of the pre-trip.
Only during the inside walk through.

Question 111 of 315

1 points

Inspect your cargo after you have driven:

25 miles or 50 miles depending on the law in the state you are in, then again after 3 hours or after you have driven 150 miles and after every stop for a break.
75 miles.
150 miles.

Question 112 of 315

1 points

Axle weight means the following?

The weight transmitted to the ground by one axle or one set of axles.
The weight transmitted to the tires from the axle.
Both of these are correct.

Question 113 of 315

1 points

Blocking your cargo to keep it from sliding must be done at the:

Needed in the front of a piece of cargo only.
Unattached to the cargo deck.
Used in front, back, and/or sides of a piece of cargo.

Question 114 of 315

1 points

Over-length, over-width, and/or overweight loads require:

Flashing lights.
Driving limited to certain times.
Special transit permits.
All of these answers are correct.

Question 115 of 315

1 points

Turn signals should be used:

At least 100 feet before turning or changing lanes.
At least 250 feet before turning or changing lanes.
At least 350 feet Before turning or changing lanes.

Question 116 of 315

1 points

Which of these statements about speed management is true?

On a wet road, you should reduce your speed by about 1/3.
On packed snow, you should reduce your speed by about 1/2.
When the road is slippery, it will take longer to stop and it will be harder to turn without skidding.
All of these are true.

Question 117 of 315

1 points

You are driving on a straight, level highway at 50 mph. There are no vehicles in front of you. Suddenly a tire blows out on your vehicle. What should you do first?

Begin light braking.
Begin controlled or stab braking.
Stay off the brake until the vehicle slows down on its own.

Question 118 of 315

1 points

Which of these will help keep an engine cool in hot weather?

Making sure the engine has the right amount of oil.
Properly adjusted v-belts.
Avoiding high speed driving.
All of these answers are correct.

Question 119 of 315

1 points

When a vehicle is carrying a load at night, which extends four feet or more beyond the rear of the body, there must be ____ at the extreme end of the load.

1 large red flag.
3 red flags.
2 red lights.

Question 120 of 315

1 points

When checking the bus seats, what are you looking for?

To insure they are securely fastened to the bus.
To see if they have been removed.
To insure the seat and back portions are not loose.
All these answers are correct.

Question 121 of 315

1 points

You must inspect your cargo:

After every break.
Every 3 hours or 150 miles.
Before starting.
All of these are correct.

Question 122 of 315

1 points

Tie downs must be of the proper type and strength. The combined strength of cargo tie downs must be strong enough to lift:

One and one-half times the weight of the cargo tied-down.
Three times the weight of the cargo tied-down.
Twice the weight of the cargo tied-down.

Question 123 of 315

1 points

Which of these is important to check before driving in the winter?

Exhaust.
Steering.
Tires.

Question 124 of 315

1 points

Tank vehicles are used to carry any liquid and are dangerous to drive because:

Danger of load surge.
High center of gravity.
Shifting of the load occurs.
All of these are true.

Question 125 of 315

1 points

Gross Vehicle Weight Rating (GVWR) means the following?

Maximum GVW specified by manufacture for a single vehicle including it's load.
Maximum GVW specified by the manufacture.
Maximum GVW specified by manufacture for a single vehicle.

Question 126 of 315

1 points

Gross Vehicle Weight (GVW) means the following:

The total weight of a single vehicle including its load.
Total weight of a single vehicle.
Total weight of the vehicle axle.

Question 127 of 315

1 points

Prior to driving, what are some of the items you should check the interior of the bus for?

School books and student belongings.
A student or other passengers.
Trash and clothing.
All of these are correct.

Question 128 of 315

1 points

How far can the board of education make a student walk to their assigned pick up location?

1/2 mile.
150 yards.
250 yards.

Question 129 of 315

1 points

There are three types of vehicle inspections, which of these is one of them?

Post-trip.
En-route.
Pre-trip.
All of these are correct.

Question 130 of 315

1 points

You are checking your brakes and suspension system for a pre-trip inspection. Which of these statements is true?

Brake pads should not have brake fluid on them.
One missing leaf in a leaf spring can be dangerous.
Brake shoes should be at least 1/32 inch thick.
All of these are true.

Question 131 of 315

1 points

You must park on the side of a level, straight, four lane, divided highway. Where should you place the three reflective triangles?

One about 50 feet from the rear of the vehicle, one about 100 feet to the rear, and one about 100 feet from the front of the vehicle.
One within 10 feet of the front of the vehicle, one about 200 feet from the front, and one about 100 feet to the rear.
One within 10 feet of the rear of the vehicle, one about 100 feet to the rear, and one about 200 feet to the rear.

Question 132 of 315

1 points

Which of these is a good driving rule for work zones?

Turn on you flashers/hazard lights.
Use your brake lights to warn drivers behind you.
Drive slowly.
All of these are correct.

Question 133 of 315

1 points

Under loaded front axles can cause the following:

Too much play in the steering wheel.
Poor traction.
Damage to the tires.
All of these are correct.

Question 134 of 315

1 points

Dry bulk tanks require special care because:

The load can shift.
They have a high center of gravity.
Both of these are true.

Question 135 of 315

1 points

Overloading can have a bad effect on?

Speed control.
Steering.
Braking.
All of these are correct.

Question 136 of 315

1 points

No matter how small the cargo is, it should have at least:

6 tie downs.
2 tie downs.
1 tie down.

Question 137 of 315

1 points

As part of your pre-trip inspection you must:

Check for poorly balanced weight.
Check if cargo is secured.
Check for overloads.
All of these are correct.

Question 138 of 315

1 points

Which item below lists almost all or all the emergency equipment that is required on a school bus?

A fire extinguisher, flashlight, fusees, electrical fuses (if your vehicle uses them), a crow bar, emergency triangles, and a first aid kit (with an emergency medical card for each student inside the first aid kit).
A crow bar and fire extinguisher only.
A can of brake fluid, flashlight, and a new bottle of window washer fluid.

Question 139 of 315

1 points

Cargo that is not loaded or secured properly can cause many problems. Which of these statements is true?

Other highway users can hit or be hit by loose cargo.
Loose cargo can cause injury to the driver or passengers during a quick stop or crash.
Overloading can damage vehicle.
All of these are true.

Question 140 of 315

1 points

You must drive on a slippery road. Which of these is a good thing to do in such a situation?

Apply the brakes during turns.
Slow down gradually.
Use a smaller following distance.

Question 141 of 315

1 points

Brake “fade”:

Can be corrected by letting up on the brakes for 1-2 seconds and then reapplying them.
Only occurs with drum brakes.
Can be caused by the brakes becoming too hot.

Question 142 of 315

1 points

The biggest problem with a broken exhaust system is that it may let poison fumes into the vehicle’s cab.

True.
False.

Question 143 of 315

1 points

What is the most important reason for doing a vehicle inspection?

Federal and State regulations require you to inspect your vehicle.
Safety for yourself and others.
A vehicle defect found during inspection can save you problems later.
All of these are correct.

Question 144 of 315

1 points

You should have a minimum of ____ tread on your steering tires.

1/4 inch.
4/32 inch.
2/32 inch.

Question 145 of 315

1 points

When taking a break in the middle of your trip you should check:

Critical items: windshield wiper blades, heater, and defroster.
Call in and check with dispatch.
Critical items such as: tires, brakes, and cargo tie-downs.

Question 146 of 315

1 points

Which of these is correct regarding brake shoes:

Brake shoes should be larger then a quarter on the steering axle.
Brake shoes should not be worn dangerously thin.
Brake shoes should have the same thickness of a penny.

Question 147 of 315

1 points

What items should be checked for safety on the steering column?

Up to 1/4 of the steering parts may be broken.
Steering arms should not have missing nut, bolts or cotter keys.
Steering arms should not have mismatched, bent or cracked lug nuts.

Question 148 of 315

1 points

Measuring BAC (Blood Alcohol Concentration) is done by measuring a person’s:

Age.
Height.
Body Weight.

Question 149 of 315

1 points

Your truck has a dual air system and one of the system loses its pressure. What will happen?

The manual slack adjusters of the S-cam brakes will not be set properly.
Brake drums will not be fully pressurized.
Either the front or back brake will not be fully operational.

Question 150 of 315

1 points

When getting in to start the engine and inspect inside the cab you must:

Make sure the parking brake is on and put the gearshift in neutral (or park if automatic).
Start the engine and listen for unusual noises.
Both of these answers are correct.

Question 151 of 315

1 points

When preparing to do a pre-trip inspection you must check to see that the parking brakes are on and/or chocked.

True.
False.

Question 152 of 315

1 points

The oil pressure gauge should come up to normal within how long after staring the engine?

Minutes.
Seconds.
It does not matter.

Question 153 of 315

1 points

You should check the following for looseness, sticking, damage, or improper settings:

Steering wheel and Transmission controls.
Accelerator, brakes, and clutch pedals.
Both of these answers are correct.

Question 154 of 315

1 points

After inspecting mirrors and windshields for cracks, dirt, and illegal stickers, or other obstructions to your vision, you should:

Look in the mirror to see if you look good.
Clean and adjust as necessary.
Not worry about any of it.

Question 155 of 315

1 points

When checking lights you should:

Make sure that the parking brake is set.
Turn off the engine and take the key with you.
Turn on the headlights and four way flashers.
All of these are correct.

Question 156 of 315

1 points

What should the wheel bearing seals be checked for?

Color of paint used on cover.
Cleanliness.
Hub oil level and no leaks.

Question 157 of 315

1 points

How many red reflective triangles should you carry?

1
3
4

Question 158 of 315

1 points

How do you test the hydraulic brakes for leaks?

Pump the brake pedal three times, then apply firm pressure to the pedal and hold for five seconds. The pedal should not move.
Drive 20 mph and slam on the brakes.
Drive slowly and pump the brake pedal. Make sure it doesn't hit the floor.

Question 159 of 315

1 points

Why put the starter key in your pocket during the pre-trip inspection?

So you don't lose it.
So no one moves the vehicle.
For your safety.

Question 160 of 315

1 points

To avoid rollbacks when you start, you should:

Stop on a flat area.
Engage the clutch very quickly.
Partly engage the clutch before you take your right foot off the brake.

Question 161 of 315

1 points

What is the proper way to hold the steering wheel?

Firmly with both hands on opposite sides of the wheel.
With your right hand on the wheel.
Firmly with one hand at the top of the wheel and the other hand at the bottom of the wheel.

Question 162 of 315

1 points

Why should you back towards the driver’s side?

Backing toward the right side is dangerous.
So you can see better.
Both answers are correct.

Question 163 of 315

1 points

When backing, why is it important to use a helper?

It makes people think you are a better driver.
There are blind spots you can't see.
It's more fun when you have help.

Question 164 of 315

1 points

What is the most important hand signal you and your backing helper should agree on?

Stop.
Go.
Slowly.

Question 165 of 315

1 points

What are two special occasions where you should downshift?

When starting off fast and speed shifting.
Before starting down a hill and before entering a curve.
Before starting up a hill and when going around a curve.

Question 166 of 315

1 points

When should you downshift automatic transmissions?

When going down grades.
When going up grades.
When going around curves.

Question 167 of 315

1 points

Retarders keep you from skidding where the road is slippery.

True.
False.

Question 168 of 315

1 points

What are two ways to know when to shift?

Use engine speed (rpm) and road signs.
Use your watch and engine sounds.
Use engine speed (rpm) and use road speed (mph).

Question 169 of 315

1 points

How far ahead should you look?

5-10 seconds.
12-15 seconds.
15-30 seconds.

Question 170 of 315

1 points

What are the two main things to look for ahead?

Road signs and traffic.
Police and weigh stations.
Traffic and road conditions.

Question 171 of 315

1 points

What is your most valuable way to see the sides and rear?

By looking out the window.
Checking your mirrors regularly.
Getting out and inspecting the areas.

Question 172 of 315

1 points

What does “communicating” in mean in safe driving?

Letting other drivers know you're there to help prevent crashes.
Using hand signals.
Driving brightly colored vehicles.

Question 173 of 315

1 points

If you go twice as fast your stopping distance will increase by:

Two times.
Three times.
Four times.

Question 174 of 315

1 points

Empty trucks have the best braking.

True.
False.

Question 175 of 315

1 points

What is hydroplaning?

Driving in the snow.
When the tires lose their contact with the road.
When you hit a pot hole.

Question 176 of 315

1 points

What is black ice?

Dirty snow.
Rain and snow mixed.
A thin layer of ice clear enough that you can see the road underneath it.

Question 177 of 315

1 points

If the vehicle in front of you is smaller than yours, it can probably:

Out-run you.
Stop faster than you.
Take turns faster than you.

Question 178 of 315

1 points

If you are driving a 30 foot vehicle at 55 mph, how many seconds of following distance should you allow?

4 seconds.
6 seconds.
8 seconds.

Question 179 of 315

1 points

If you swing wide to the left before turning right another driver may try to pass you on your right.

True.
False.

Question 180 of 315

1 points

You should use low beams whenever you can.

True.
False.

Question 181 of 315

1 points

What should you do before driving if you are sleepy?

Drink some coffee.
Take some caffeine pills.
Get some sleep before you drive.

Question 182 of 315

1 points

What effects can wet brakes cause?

Brakes can be weak or grab.
Brakes to work better.
Your foot can get tired.

Question 183 of 315

1 points

How can you avoid wet brake problems?

Speed up, shift to a higher gear.
Slow down, shift to a low gear, gently put on the brakes.
Apply the brakes harder and faster.

Question 184 of 315

1 points

You should let air out of hot tires so the pressure goes back to normal.

True.
False.

Question 185 of 315

1 points

You can safely remove the radiator cap as long as the engine isn’t overheated.

True.
False.

Question 186 of 315

1 points

What factors determine your selection of “safe” speed when going down a long steep downgrade?

Size of vehicle, traffic conditions, curves in the road.
Condition of the brakes, radio bulletins, and alertness of the driver.
Total weight of the vehicle, length of the grade, steepness, road conditions, and weather.

Question 187 of 315

1 points

Why should you be in the proper gear before starting down a hill?

Because gravity can cause the speed of your vehicle to increase.
Because you don't want to shift going down a hill.
Because the clutch works better up a hill.

Question 188 of 315

1 points

What is a hazard?

Any road condition or other road user that is a possible danger.
A flashing amber light.
A small animal.

Question 189 of 315

1 points

Why make emergency plans when you see a hazard?

To have something to do while driving.
In order to protect yourself and others.
To avoid getting a ticket.

Question 190 of 315

1 points

What are some advantages of going right instead of left around an obstacle?

You can avoid a head-on collision.
Taking the shoulder may be best.
Someone may be passing to the left.
All of these answers are correct.

Question 191 of 315

1 points

Stopping isn’t always the safest thing to do in an emergency.

True.
False.

Question 192 of 315

1 points

What is an “escape ramp”?

Ramps that are located a few miles from the top of a downgrade to help you stop.
A quick way to get out of town.
Ramps to get on and off an interstate highway fast.

Question 193 of 315

1 points

What are some things to do at an accident scene to prevent another accident?

Try to get your vehicle to the side of the road.
If you're stopping to help, park away from the accident.
Put on your flashers and set out reflective triangles.
All of these answers are correct.

Question 194 of 315

1 points

Name two causes of fires:

Under-inflated tires and duals that touch.
Tight turns and gravel roads.
Driver smoking and following too close.

Question 195 of 315

1 points

Which of these can cause the vehicle to skid?

Not enough weight on the front axle.
Over acceleration.
Turning too sharply.
All of these answers are correct.

Question 196 of 315

1 points

You are driving a vehicle that could safely be driven at 55 mph on an open road; but traffic is now heavy, moving at 35 mph, although the speed limit is 55. The safest speed for your
vehicle in this situation is most likely:

35 mph.
40 mph.
45 mph.

Question 197 of 315

1 points

Every time you park your vehicle and shut the engine off you should:

Leave it in gear (if it has a manual transmission).
Apply the parking brake.
Turn the steering wheel as far to the left as you can.

Question 198 of 315

1 points

For an average commercial vehicle being driven at 55 mph on dry pavement it will take about ___ to bring the vehicle to a stop.

The length of a football field (300 feet).
Half the length of a football field (150 feet).
Twice the length of the vehicle.

Question 199 of 315

1 points

Which of these statements about certain types of cargo is true?

Oversize loads can be hauled without special permits during daylight hours.
When liquids are hauled, the tank should always be loaded completely full.
Unstable loads such as hanging meat or livestock require extra caution on curves.

Question 200 of 315

1 points

Which of the following statements about backing is true?

Backing is always dangerous.
You should back and turn towards the driver's side whenever possible.
You should use a helper and communicate with hand signals.
All of the these are true.

Question 201 of 315

1 points

The most common cause of serious vehicle skids is:

Driving too fast for road conditions.
Poorly adjusted brakes.
Over-inflated tires.

Question 202 of 315

1 points

The parking brake should be tested while the vehicle is:

Moving slowly.
Moving at highway speed.
Moving forward slowly.

Question 203 of 315

1 points

A driver’s trip log if required:

May be brought up to date once a week.
May be written in pencil.
Must be shown immediately when an officer requests it.

Question 204 of 315

1 points

When should the pre-trip inspection report from the last driver be reviewed?

During your pre-trip inspection.
Once per week.
It doesn't have to be reviewed.

Question 205 of 315

1 points

If you are stopped at a rest area and found to have a BAC (Blood Alcohol Concentration) of .02 you will:

Be placed out of service for 24 hours.
Be placed out of service for 48 hours.
Be placed out of service for 72 hours.

Question 206 of 315

1 points

How far ahead should you be looking while driving in town?

1 block.
2 blocks.
As far ahead as you can see.

Question 207 of 315

1 points

How does “bleeding tar” effect the road surface and driving conditions?

It is very sticky slowing down your vehicle.
Tar in the road pavement rises to the road surface in very hot weather causing the roads to become very slippery.
It does not effect the road surface or driving conditions.

Question 208 of 315

1 points

Converter dollies built on or after March 1, 1998 are required to have anti-lock brakes. These dollies will have:

A yellow malfunction lamp in the center of the dolly.
A yellow malfunction lamp on the left side of the dolly.
A yellow malfunction lamp on the right side of the dolly.

Question 209 of 315

1 points

What is the minimum length for mud flaps?

Within 6 inches from the surface of the road.
Within 8 inches of the surface of the road.
Within 10 inches of the surface of the road.

Question 210 of 315

1 points

How long does it take a typical tractor trailer to clear a single track? A double track?

It takes 7 seconds to clear a single track, and more than 10 seconds to clear a double track.
It takes 10 seconds to clear a single track, and more than 12 seconds to clear a double track.
It takes 14 seconds to clear a single track, and more than 15 seconds to clear a double track.

Question 211 of 315

1 points

What is the definition of “sleep debt”?

The cumulative effect of not getting enough sleep.
The money you owe hotels after resting there.
The amount of sleep you get each day.

Question 212 of 315

1 points

Name some important steering system parts:

Tie rod, spindle, and pitman arm.
Leaf spring, vehicle frame, and torque rod.
Main spring, axle, and spring shackle.

Question 213 of 315

1 points

What is the minimum tread depth for front tires?

1/32 inch.
2/32 inch.
4/32 inch.

Question 214 of 315

1 points

When using your fire extinguisher you should get as close to the fire as possible.

True.
False.

Question 215 of 315

1 points

Name some things you should check on the FRONT of your vehicle during your pre-trip inspection:

Low beams, high beams, four way flashers, and turn signals.
Windshield wipers, mirrors, and hood latches.
Oil, transmission, air compressor, and radiator.

Question 216 of 315

1 points

Why are placards used?

So hazardous materials are not mixed with food.
It is the law.
To communicate the risk.

Question 217 of 315

1 points

Name some suspension system defects:

Broken leaves in leaf spring and cracked or broken spring hanger.
Leaking shock absorbers.
All of the answers are correct.

Question 218 of 315

1 points

What is the minimum tread depth for tires other than front tires?

2/32 inch.
3/32 inch.
4/32 inch.

Question 219 of 315

1 points

How can you avoid the effects that wet brakes can cause?

Slow down and place the transmission in low gear.
Gently put on the brakes and increase engine rpm, cross the water while keeping light pressure on the brakes.
When out of water maintain light pressure on the brakes for a short distance.
All of these answers are correct.

Question 220 of 315

1 points

What things should you check during a trip?

Check load stability by slightly swerving left to right in your lane.
Map, directions, and weather report.
Watch gauges, mirrors, and use your senses to check for problems...LOOK, LISTEN, AND SMELL.

Question 221 of 315

1 points

Why should you be in the proper gear before starting down a hill?

Because you need to be in the same gear at the bottom of the hill.
You will not be able to shift into a lower gear once you are going down a hill.
Because the clutch is made to be used on even surfaces.

Question 222 of 315

1 points

What is an advantage of going right instead of left around an obstacle?

There is no advantage.
It is much easier to turn a truck to the right.
If you are blocked on both sides, a move to the right won't force anybody into an opposing traffic lane and a possible head-on collision.

Question 223 of 315

1 points

Name two situations were legal maximum weights may not be safe to haul:

During bad weather or in mountains.
Through tunnels and over bridges.
At night or during heavy traffic.

Question 224 of 315

1 points

What three things related to cargo are the driver’s responsibility?

Inspecting the cargo, recognizing overloads, and properly securing the cargo.
Inspecting the cargo, hauling the cargo, and securing the cargo.
Weighing the cargo, securing the cargo, and delivering the cargo.

Question 225 of 315

1 points

What is a hazardous materials placard?

Signs put on the outside of a vehicle which identify the hazard class of the cargo.
Signs put on the back of a vehicle which identify the hazard class of the cargo.
Signs put on the outside of a vehicle which identify the hazard class and weight of the vehicle.

Question 226 of 315

1 points

What must you check before transporting a sealed load?

That the seal is authentic.
That the load is properly secured.
That the placard numbers match the seal numbers.

Question 227 of 315

1 points

How do you calculate how many seconds of following distance space you have?

Wait until the vehicle ahead of you passes a clear landmark, then count off the seconds until you reach the same spot.
Wait until the vehicle ahead of you passes a clear landmark, then count off the seconds until you reach the same spot, then multiply your figure by 2.
Divide your speed by four and add one second for every ten feet of trailer you are hauling.

Question 228 of 315

1 points

What is a “pull-up”?

When pulling off the shoulder you pull up until the trailer is straight.
A maneuver performed by a tow truck to pick up an overturned truck.
Pulling forward while backing a trailer to reposition it.

Question 229 of 315

1 points

What should wheel bearing seals be checked for?

Leaks.
Gasoline.
Color changes.

Question 230 of 315

1 points

Select the proper collision procedures that are required for any collision that you are involved in; in which you are not seriously injured.

Protect the area.
Notify the authorities.
Care for the injured.
Collect required information.
Report the collision.
All of these are required.

Question 231 of 315

1 points

The tendency for long commercial vehicles to swing wide on turns is called:

Off-tracking.
Hydroplaning.
Fishtailing.

Question 232 of 315

1 points

What should you do if you get stuck on the railroad tracks?

Scream for help.
Get out of your vehicle and away from the tracks.
Stay in your vehicle.

Question 233 of 315

1 points

Which of these is good thing to remember about drinking alcohol?

Alcohol first affects judgment and self-control.
Small quantities of alcohol can improve reaction time.
The driver can control how quickly the body rids itself of alcohol.

Question 234 of 315

1 points

Which of these statements is true about medicines used to treat the common cold?

It can be used while driving as long as you only take half the regular dose.
It should only be used when driving during the daytime.
It often makes you sleepy thus should not be used while driving.

Question 235 of 315

1 points

The total weight of the powered unit, the trailer, and the cargo is called:

Gross vehicle weight.
Gross combination weight.
Gross axle weight.

Question 236 of 315

1 points

Which piece of emergency equipment should be in your vehicle?

Circuit breakers.
First Aid Kit.
Warning devices for parked vehicles.

Question 237 of 315

1 points

Which of these statements is true about causes of vehicle fires?

Under-inflated tires will NOT cause a vehicle fire.
Carrying a properly charged fire extinguisher will help prevent fires.
Poor trailer ventilation can cause flammable cargo to catch on fire.

Question 238 of 315

1 points

Which of these statements is true about vehicle fires?

If the cargo or box trailer catches on fire, open the doors as soon as you can.
If your engine is on fire, open the hood as soon as you can.
A burning tire should be cooled with water.

Question 239 of 315

1 points

Which of these statements is true about brakes.

Brakes absorb more heat to stop heavier vehicles.
Brake drums cool very quickly when the vehicle is moving very fast.
Brake fade is not caused by heat.

Question 240 of 315

1 points

Which of the following does not provide extra gears on some trucks?

Automatic transmissions.
Auxiliary transmissions.
Multi-speed rear axles.

Question 241 of 315

1 points

Which of these is not a danger when an automatic transmission is forced into a lower gear at a high speed?

Damage to the transmission.
Loss of engine braking effect.
Loss of steering control.

Question 242 of 315

1 points

Which of these statements is true about backing heavy vehicles?

You should avoid backing whenever you can.
Helpers should be out of sight and use only spoken signals to communicate with the driver.
It's safer to back toward the right side of the vehicle.

Question 243 of 315

1 points

The distance you should look ahead ___while driving at highway speeds.

1/8 mile.
1/4 mile.
1/2 mile.

Question 244 of 315

1 points

The Commercial Driver’s Handbook suggests several things to do when you pass a vehicle. Which of these is NOT one of them?

Lightly tap your horn if needed.
At night, turn on your high beams while you pass the vehicle.
Assume the other driver does not see you.

Question 245 of 315

1 points

Which of these statements is true about speed management?

Shady parts of the road allow better traction than open areas.
Road surfaces will freeze before bridges.
On slippery roads, it takes longer to stop and is harder to turn without skidding.

Question 246 of 315

1 points

You are driving a heavy vehicle and must exit a highway using an off ramp that curves downhill. You should:

Slow down to a safe speed before taking the curve.
Slow down to the posted speed limit for the off ramp.
Wait until you are in the curve before downshifting.

Question 247 of 315

1 points

Which of these is a good thing to do when driving at night?

Drive slowly enough to stop within the range of your headlights.
Look directly at oncoming headlights only briefly.
Keep your instrument lights bright.

Question 248 of 315

1 points

Which of these is NOT something you should do if your headlights are not working properly?

Clean the headlights.
Leave your high beams on.
Adjust the headlights.

Question 249 of 315

1 points

When roads are slippery you should:

Decrease the distance that you look ahead of your vehicle.
Stop and test the traction while going up hills.
Make turns as carefully as possible.

Question 250 of 315

1 points

You should avoid driving through deep puddles or flowing water but if you cannot, which of these steps can help keep your brakes working?

Gently putting on the brakes while driving through the water.
Turning on your brake heaters.
Pressing both the brake pedal and the accelerator firmly after coming out of the water.

Question 251 of 315

1 points

Which of these is true about the radiator shutters and the winterfront?

The winterfront should be closed tightly.
You should remove ice from the radiator shutters.
The engine may overheat if the winterfront is left open.

Question 252 of 315

1 points

Which of these statements is NOT true about engine belts in hot weather?

Cracking is likely to occur but it is not a safety threat.
You can check the tightness of belts by pressing on them.
Loose belts will not turn the water pump and/or fan on properly.

Question 253 of 315

1 points

What should you do if you see a hazard in the roadway?

Swerve around it and get back into your lane.
Stop quickly and pull to the side of the road.
Use your 4-way flashers or brake lights to warn others.

Question 254 of 315

1 points

A car suddenly “cuts” in front of you creating a hazard. What should you NOT do?

Honk and stay close behind the car.
Slow down to prevent a crash.
Signal and change lanes to avoid the car if possible.

Question 255 of 315

1 points

Your vehicle has hydraulic brakes. When traveling on a level road, you press the brake pedal and find that it goes to the floor. Which of these statements is true?

The parking brake will not work because it is part of the same hydraulic system.
Pumping the brake will generate enough pressure to stop the vehicle.
Shifting into neutral will help slow the vehicle.

Question 256 of 315

1 points

Bridge formulas permit:

Less maximum axle weight for axles that are close together.
Less maximum axle weight for axles that are far apart.
The same maximum axle weight for any axle spacing.

Question 257 of 315

1 points

You are checking your steering and exhaust systems in your pre-trip inspection. Which of these problems should be fixed before the vehicle is driven?

Oil on the tie rod.
Grey smoke from the exhaust pipe.
Steering play- more than 10% (2 inches on a 20 inch wheel).

Question 258 of 315

1 points

Which of these items is NOT checked on a pre-trip inspection?

Whether all vehicle lights are working and clean.
Cargo securement.
Amount of fuel in the vehicle.

Question 259 of 315

1 points

One can recognize hazardous materials by looking at the container’s:

Label.
Shape.
Color.

Question 260 of 315

1 points

If you must stop on a hill in a two-way, two-lane road. How far back should you place your reflective triangles?

Within 250 feet behind the vehicle.
Within 500 feet behind the vehicle.
As far back as necessary, so that others can see your vehicle.

Question 261 of 315

1 points

Which of these is true about hours of service?

You must take a break after every two hours of driving.
After 1,000 hours of service you will be exempt from certain regulations.
You should balance your hours of service with enough sleep to keep you alert.

Question 262 of 315

1 points

You should try to park your vehicle so:

You can pull forward when you leave.
There is at least one curb next to your vehicle.
Your vehicle is protected by trees or some overhang.

Question 263 of 315

1 points

Which of these is NOT a proper use of vehicle lights?

Turning on your headlights during the days when visibility is reduced.
Flashing your brake lights to warn someone behind you that you are slowing down.
Flashing your brake lights to stop someone from tailgaiting.

Question 264 of 315

1 points

Which of the following is NOT a type of retarder?

Electric.
Hydraulic.
Robotic.

Question 265 of 315

1 points

What is the first thing you should try to do if your brakes fail while driving downhill?

Call or radio for help.
Try to use your parking brake to stop.
Get off the road as soon as possible.

Question 266 of 315

1 points

When you drive in the mountains, you will have to use lower gears to drive safely down grades. Which of these does NOT affect your choice of gears?

Weight of the load.
Tire tread type.
Length of the grade.

Question 267 of 315

1 points

Which of these is NOT caused by rough acceleration?

Tire damage.
Mechanical damage.
Damage to the coupling.

Question 268 of 315

1 points

Which of the following statements is true?

Most people are more alert at night than during the day.
Most hazards are more easily seen at night than during the day.
Many heavy vehicle accidents occur between midnight and 6 am.

Question 269 of 315

1 points

Which of the following may be a sign of tire failure?

A loud hissing noise.
Gentle thumping.
Wheels fishtailing.

Question 270 of 315

1 points

Which of these statements is NOT true?

Alcohol goes directly from the stomach to the blood stream.
A drinker can control how fast his or her body absorbs and gets rid of alcohol.
BAC is determined by how fast you drink, how much you drink, and how much you weigh.

Question 271 of 315

1 points

Optional safety equipment may include emergency phone numbers, tire chains, and:

Tire changing equipment.
Red reflective triangles.
Charged fire extinguisher.

Question 272 of 315

1 points

The braking effect of the engine is greatest when the engine is ___ the governed RPM’s and the transmission is in the ___ gears.

Above, lower.
Below, higher.
Near, lower.

Question 273 of 315

1 points

The best drivers are those who watch and prepare for hazards. This is called being:

Defensive.
Offensive.
Objective.

Question 274 of 315

1 points

What will help keep an engine cool in hot weather?

Driving faster to force more air into the radiator.
Running the air conditioner.
Making sure the engine has the right amount of oil.

Question 275 of 315

1 points

Which of these statements is true regarding the use of drugs while driving?

Prescription drugs are allowed as long as the doctor says the drugs will not affect safe driving ability.
No prescription or non prescription drugs are allowed at any time for any reason.
Use of amphetamines, like "speed" is allowed as long as you are using the drugs to stay awake.

Question 276 of 315

1 points

Which of these statements is true about warning other drivers of a stopped vehicle?

Move the rear reflective triangle back if the driver's vision is obscured to within 500 feet.
Keep the vehicles taillights on to warn other drivers.
Put out your emergency warning devices within five minutes.

Question 277 of 315

1 points

If you have a heavy load that is slowing you down on an upgrade you should:

Exit the roadway until traffic is lighter.
Drive on the shoulder so that others can pass easily.
Shift into a lower gear.

Question 278 of 315

1 points

Which of these statements is NOT true about backing a heavy vehicle?

You should use a helper and communicate with hand signals.
You should back slowly until you slightly bump into the dock.
You should back and turn toward the driver's side whenever possible.

Question 279 of 315

1 points

In your mirror you see a car approaching from the rear. The next time you check your mirror you don’t see the car. To change lanes you should:

Wait until you are sure the car isn't in your blind spot.
Ease into the other lane slowly so the other car can get out of the way.
Assume the car left the roadway and change lanes as normal.

Question 280 of 315

1 points

What should you do if a car coming towards you at night keeps it’s high beams on?

Flash your high beams at the other driver.
Slow down and look straight ahead in your lane.
Look to the right edge of your lane or the right edge of the road.

Question 281 of 315

1 points

Which of these is especially true about your tires in hot weather?

You should check tire mounting and air pressure before driving.
If a tire is too hot to touch, you should hose it down with water.
A small amount of air should be let out to keep air pressure steady.

Question 282 of 315

1 points

When driving through roadway work zones, you should:

Reduce speed only if workers are close to the roadway.
Turn on your parking lights.
Watch for sharp pavement drop-offs.

Question 283 of 315

1 points

Which of these statements is true about bad weather driving conditions?

When the temperature drops, bridges will freeze before roadways.
The road becomes more slippery as rain continues than when the rain began.
Driving conditions become more dangerous as the temperature rises.

Question 284 of 315

1 points

Which of these statements is true about other drivers?

Mail or delivery truck drivers do not pose a hazard.
Drivers using turn signals can be trusted to turn in the direction they indicate.
Short-term or daily rental truck drivers are often not used to the limited vision and pose a hazard.

Question 285 of 315

1 points

Which of these will happen if a tire blows out at highway speeds?

A rapid drop in speed to below 20 mph.
A loud hissing sound.
A vibrating feeling.

Question 286 of 315

1 points

To prevent “brake fade” you should:

Select a gear that will keep your vehicle to a safe speed on steep downgrades.
Apply constant hard pressure on the brakes.
Coast down hills that are not very steep inclines.

Question 287 of 315

1 points

If you have been drinking alcohol, before you drive, you should:

Take a cold shower.
Wait for it to wear off.
Drink coffee.

Question 288 of 315

1 points

Which of the following best describes how sleep debt can be paid off?

Overcome it with willpower and non-sleep aids.
It will go away by itself over a period of time.
It can only be paid off by sleeping.

Question 289 of 315

1 points

Which of these statements is true about drugs?

The use of alcohol or drugs can lead to collision and/or arrest.
A driver can use any prescription drug while driving.
Certain prescription drugs are allowed to reduce fatigue.

Question 290 of 315

1 points

“Implied consent” means when you sign the driver’s license application form, you:

Understand that you may drink alcohol now before driving.
Give your consent to be tested for alcohol in your blood.
Give your consent for your vehicle to be inspected for alcohol.

Question 291 of 315

1 points

You should use your mirrors to check:

Your blind spots only.
If your running lights are working properly.
Where the rear of your vehicle is while you make turns.

Question 292 of 315

1 points

Convex curved mirrors:

Make objects appear larger than they really are.
Make objects appear closer than they really are.
Show a wider area than flat mirrors.

Question 293 of 315

1 points

The purpose of retarders is to:

Help slow the vehicle while driving and reduce brake wear.
Apply extra braking power to the non-drive axles.
Help prevent skids and reduce brake wear.

Question 294 of 315

1 points

It is important to shift gears correctly to keep:

Control of the vehicle.
The engine warm.
The engine oil flowing.

Question 295 of 315

1 points

A helper should be used to help back your vehicle:

When you have a trailer.
Whenever possible.
When you need to back on a curved path.

Question 296 of 315

1 points

You should signal continuously while turning because:

You need both hands on the wheel to turn safely.
It is illegal to turn off your signal before completing a turn.
Most vehicles have self canceling signals.

Question 297 of 315

1 points

When approaching a traffic light that has been green for a long time, you should:

Accelerate so you get through the light.
Start to slow down so you will be ready to stop.
Continue at your current speed.

Question 298 of 315

1 points

What three things add up to total stopping distance for your truck or bus?

Attention distance, reaction distance, slowing distance.
Observation distance, reaction distance, braking distance.
Perception distance, reaction distance, braking distance.

Question 299 of 315

1 points

If you cannot see well with your headlights when driving in an area with few streetlights on a clear night, you should:

Turn your interior lights on.
Find another route that is better lit.
Use your high beams when legal and keep your interior light off.

Question 300 of 315

1 points

When driving at night, use your low beams, when an oncoming vehicle is within:

300 feet.
400 feet.
500 feet.

Question 301 of 315

1 points

If your brakes get wet while driving on a rainy day, what can happen when you apply the brakes?

Hydroplaning.
Excessive brake wear.
Trailer Jackknife.

Question 302 of 315

1 points

Which of these is a danger of crossing railroad tracks on dirt roads?

The ground underneath the tracks may not be stable.
You could get hung up halfway across the tracks.
Your tires could sink into the dirt and not cross the tracks.

Question 303 of 315

1 points

A key principle to remember about loading cargo is to keep the load:

To the front.
To the rear.
Balanced in the cargo area.

Question 304 of 315

1 points

Containerized loads:

Should come with their own tie-down devices.
Are generally used for freight carried part way by rail or ship.
Do not need to be inspected or secured by the driver.

Question 305 of 315

1 points

Can federal inspectors inspect your truck or bus?

Yes, but they cannot place it out of service.
Yes, and they can place it out of service.
No.

Question 306 of 315

1 points

Which of these is NOT required knowledge for drivers needing HAZMAT endorsement?

When to use placards.
Which products can be loaded together.
Basic chemistry.

Question 307 of 315

1 points

When driving on grades, which of these is the best choice for a safe speed?

If you have a light load, you can go faster than those with a heavy load.
Based on your vehicle and it's cargo, select a speed that is safe within the posted limit.
Follow the vehicle in front of you.

Question 308 of 315

1 points

Trucks and buses are subject to certain laws, restrictions, and regulations. Which of these statements is true?

County and city laws do not apply to trucks and buses engaged in interstate commerce.
Federal regulations apply only to trucks and buses driven at least 50 miles on a trip.
Laws and restrictions can vary from place to place.

Question 309 of 315

1 points

When a doctor prescribes medication for you and you know you will be driving, you should:

Take the medication, but stop taking it if you notice it is affecting your driving.
Take the medication, as well as other medication to keep you alert.
Ask the doctor if the medication will affect your ability to drive.

Question 310 of 315

1 points

You should schedule your driving:

Between the hours of 4 am and 6 pm.
Between the hours of 10 am and midnight.
For the hours you are normally awake.

Question 311 of 315

1 points

Stab braking should not be used on vehicles with:

Air brakes.
Spring brakes.
Anti-lock brakes.

Question 312 of 315

1 points

If you do not have a CB radio, what is the first thing you should do at an accident scene?

Clear the area.
Protect the accident scene.
Flag down help.

Question 313 of 315

1 points

When driving in cold weather conditions, your tire tread should:

Have at least 4/32 inch tread on it.
Have at least 2/32 inch tread on it.
Provide enough traction to steer and push the vehicle through snow.

Question 314 of 315

1 points

When you are passing another vehicle, pedestrian, or bicyclist you should assume that they:

See you
Will move out of your lane of traffic.
May move into your traffic lane.

Question 315 of 315

1 points

Which of the following cannot be checked at the same time:

Headlights, brake lights, and clearance lights.
Brake lights, flashers, and turn signals.
Brake lights, turn signals, and clearance lights.

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