1 . Header boards:

Should never be used.
Protect the driver from being hit by cargo.
Protect the driver's head when entering the cab of a truck.

2 . If you are being tailgated, you should:

Drive on the shoulder.
Pull off the roadway.
Drive faster.
Allow the vehicle to pass.

3 . When backing with a trailer:

You should not back up in a straight line.
You should not correct drift until you are very far off course.
You should pull up to reposition the vehicle as needed.
You should avoid braking.

4 . Truck tractors with air brakes that were built on or after March 1, 1997 are equipped with:

An extra set of brakes.
Voice-activated brakes.
Cruise control.
Anti-Lock Braking Systems (ABS).

5 . Which of the following is not a sign of tire failure?

A loud sound
Vibration
Smoother steering

6 . How can a driver maintain alertness while driving?

Stay fit and healthy
Keep the cab warm
Eat heavy foods

7 . When changing lanes, turn signals:

Should not be used.
Should only be used if a vehicle is close to you.
Should be used each time.

8 . If traveling across state lines:

A driver should have a license for each state that will be visited.
A driver should have a license for each state where there is a planned stop.
A driver should have a license for the state where the trip begins and the state where the trip ends.
A driver should have only one license.

9 . A low air pressure warning signal should activate:

When tank pressure falls below 120 psi.
When tank pressure falls below 55 psi.
When tank pressure falls below 10 psi.

10 . ____ is a thin layer of ice that forms on road surfaces.

White ice
Black ice
Green ice

11 . Improperly loaded cargo can:

Look bad to others on the road.
Injure the driver during a quick stop.
Make it easier to stop.
Aid in safety.

12 . If approaching a vehicle with a distracted driver, you should:

Quickly pass the vehicle.
Maintain a safe distance from the vehicle.
Closely follow the vehicle.

13 . For safety purposes, when should you turn off a retarder?

When the roadways are slippery
When you are carrying a passenger
When you are carrying a heavy load
When driving in heavy traffic

14 . If driving a vehicle with a manual transmission, you can prevent your vehicle from rolling backward when starting from a stop by:

Partly engaging the clutch before removing your foot from the brake pedal.
Placing the vehicle in reverse before moving forward.
Fully engaging the clutch before removing your foot from the brake pedal.
Placing the vehicle in neutral before moving forward.

15 . The suspension system:

Holds up the vehicle and its load.
Keeps the load the proper distance behind the driver’s compartment.
Maintains a safe distance between the vehicle and other vehicles.
Lightens the load for the tires.

16 . When you leave your vehicle, you should:

Apply the parking brake.
Apply the regular brake.
Leave the keys in the ignition.

17 . Which of the following is not an example of a distracted person that motorists should be worried about?

A driver talking to a passenger in their vehicle
A child on the side of the road
A construction worker on the side of the road
A person sitting on a bench waiting for a bus

18 . Unsafely reaching for a phone is:

Acceptable if you are driving without a passenger.
Acceptable if you plan to use a hands-free feature.
Unacceptable even if you plan to use a hands-free feature.

19 . When driving, knowing what is happening behind you is:

Rarely important.
Important.
Distracting.

20 . Using a helper when backing is:

Encouraged.
Discouraged.
Illegal in most states.
Usually a cause of problems.

21 . When driving down a steep grade:

You should ride your brakes all the way down.
Shift into a higher gear as a way to slow down your vehicle.
Shift into lower gears as a way to slow down your vehicle.
The truck should be put in neutral as a way to slow down your vehicle.

22 . Be sure that your wheel bearing/seals are:

Not leaking.
Shiny.
Rusted.

23 . The air compressor governor controls:

When the air compressor pumps air into the air storage tanks.
How fast air is pumped into the air storage tanks.
The temperature of air pumped into the air storage tanks.
The speed of the vehicle.

24 . In the event of an engine fire, you should not:

Turn the engine off as soon as possible.
Keep the fire from spreading.
Open the hood.
Spray from the underside of the vehicle.

25 . A second conviction of operating a CMV with a minimum blood alcohol concentration (BAC) of 0.04 percent will result in:

The loss of your CDL for life.
The loss of your CDL for five years.
The loss of your CDL for one year.

26 . You may be denied a HazMat endorsement if:

You are a lawful resident of the United States.
You have renounced your United States citizenship.
You have only been convicted of misdemeanors.
You do not suffer from a mental illness.
Study tip:

Reduce your study time from hours to minutes with a DMV exam “Cheat Sheet”

99.2% of people who use the cheat sheet pass the FIRST TIME

27 . Hanging meat as cargo is:

Illegal to transport in most states.
Always easy to transport.
Usually unstable.

28 . When stopping in an emergency situation, you should:

Veer your trailer to the right and stop.
Stop in a straight line.
Veer your trailer to the left and stop.

29 . Most CDL holders have ____ licenses.

Excepted
Exempted
Non-excepted
Non-exempted

30 . If a load is 10 feet long, it should be secured by a minimum of:

One tie-down.
Two tie-downs.
Three tie-downs.

31 . Do not use the parking brake when parking if:

The brakes are very hot.
The brakes are very cold.
There is snow on the ground.
There is water on the ground.

32 . How is water and compressor oil removed from the bottom of an air storage tank?

The water and oil are siphoned out of the tank.
A drain valve is opened to remove the water and oil from the tank.
The water and oil are removed automatically as the brakes are used.
A sponge is used to soak up the water and oil.

33 . You should not use the parking brake:

If your vehicle is stopped on a level surface.
If your vehicle is stopped on a slight incline.
If your vehicle's brakes are very hot.
If your vehicle's other braking systems seem to be working adequately.

34 . In hot weather, spots on the pavement where tar is bleeding:

Are very slippery.
Offer the same amount of traction as the rest of the roadway.
Offer more traction than the rest of the roadway.

35 . If you must stop on the side of a one-way or divided highway, how far behind your vehicle should you place warning devices?

10, 15, and 30 feet
10, 25, and 50 feet
10, 100, and 200 feet

36 . The driver of a commercial motor vehicle:

Can use any cell phone while driving.
Can only use a hands-free mobile phone while driving.
Can only use a cell phone on rural roads.
Can use a cell phone at night.

37 . Regarding winter driving, all of the following are true, except:

Front tires should have a tread depth of at least 4/32 an inch.
Tires should be slightly deflated.
Rear tires should have a tread depth of at least 2/32 an inch.
Use a gauge to verify that each tire has a safe tread depth.

38 . The leakage rate for a single vehicle with air brakes should be no more than ____ in one minute during a static leakage test.

1 psi
2 psi
3 psi

39 . In an emergency situation, you should:

Always respond by stopping.
Not always respond by stopping.
Never respond by swerving.
Always turn on your flashers to warn other drivers.

40 . Multi-speed axles and auxiliary transmissions are used:

To make a vehicle run more smoothly.
To provide extra gears.
To get improved gas mileage.
To make a vehicle less noisy.

41 . If pulled off to the side of the road, you should:

Allow your taillights to alert other motorists.
Turn on your emergency flashers to warn other motorists.
Keep your lights off to avoid distracting other motorists.
Keep your door open to warn other motorists.

42 . You should always be able to stop within:

10 feet of your vehicle.
1,000 feet of your vehicle.
Your view of the road ahead.
One minute of hitting the brakes.

43 . The two indicators that determine when you should upshift are:

Engine speed and road speed.
Other trucks and road conditions.
Timing and road position.
Oil pressure and air brake pressure.

44 . Do not operate a vehicle if any brake drums have cracks that are larger than ____ of the width of the friction area.

One half
One third
One fifth

45 . In an emergency, if you must leave the roadway to drive on the shoulder, you should:

Brake as hard as possible.
Steer so all wheels are on the shoulder.
Stop safely before returning to the road, if possible.
Stay on the shoulder until the next exit.

46 . Bent lock rings:

Are acceptable.
Are not a concern in dry weather.
Are dangerous.
Can lengthen tire life.

47 . In a vehicle with dual air brakes, a leak in one system ____ the second system.

Will always affect
May not affect
Is caused by

48 . Your CDL will be revoked if:

You want to add an endorsement.
Your privilege to operate your personal vehicle is revoked.
You have not paid a toll.

49 . Air brakes use ____ to function.

Compressed air
Liquid air
Nitrogen

50 . It is illegal to operate a CMV with a minimum blood alcohol content (BAC) of:

0.01 percent.
0.02 percent.
0.04 percent.
0.08 percent.