1 . Rollovers happen when:

Drivers turn too quickly.
Drivers turn too slowly.
It is raining.

2 . A distracted driver:

Usually follows the rules of the road.
Usually has slowed perception.
Is a good person to follow.

3 . If hydraulic brakes fail, a driver can reduce their speed by:

Shifting into a higher gear.
Shifting into a lower gear.
Finding a hill.
Letting the truck run out of gas.

4 . A driver should always:

Stay in the right lane.
Have an emergency plan.
Stay in the left lane.
Drive above the speed limit.

5 . A low air pressure warning signal should activate:

When tank pressure falls below 120 psi.
When tank pressure falls below 60 psi.
When tank pressure falls below 10 psi.
When tank pressure falls below 5 psi.

6 . When inspecting your vehicle, you should check for all of the following, except:

Too much air pressure in your tires.
Too little air pressure in your tires.
A consistent name brand across all of your tires.

7 . Distracted driving:

Is caused only by physical distractions.
Will be increased by pre-programming radio stations.
Can be prevented by avoiding conversation with others.

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

A person talking to another person 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

9 . The service air line is attached to the:

Relay valves.
Supply line.
Emergency air line.
Steering wheel.

10 . When glad hands are coupled, the seals should be pressed together at a ____ angle.

50-degree
180-degree
90-degree

11 . ____ make up the emergency brake system.

Only parts of the parking brake system
Only parts of the service brake system
Parts of the parking and service brake systems
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

12 . Where must placards be placed?

Only on the front of a vehicle
On the front, back and both sides of a vehicle
Only on the driver’s side of a vehicle
Only on the passenger's side of the vehicle

13 . What happens when a vehicle hydroplanes?

The tires lose contact with the road.
The trailer disengages from the tractor.
The vehicle becomes easier to control.

14 . In a vehicle with dual air brakes, what happens if one system is low on pressure?

The air from the other system will be used to supplement the system with the low pressure.
The front or rear brakes may not work properly.
All brakes will be inoperable.
The low system will use an auxiliary system to fill the tank.

15 . Emergency brakes are:

Not required on trucks.
Only required on trailers.
Required on tractors.
Only required when transporting hazardous materials.

16 . When checking your vehicle's lights before driving:

The vehicle should be running and in gear.
The engine should be turned off.
The check can be done from inside the vehicle.
The check can be done by looking at a reflection from a shiny surface.

17 . If involved in an accident, which of the following is not recommended?

Trying to move your vehicle to the side of the road
Caring for the injured
Driving away from the scene

18 . If the spring brakes are activated, you should never:

Push down the brake pedal.
Open the hood.
Release air from the air storage tanks.
Open the door to the cab.

19 . If another driver is following you too closely, you should do all of the following, except:

Avoid quick changes.
Increase the distance between you and the vehicle in front of you.
Speed up.
Avoid relying on tricks to help others pass.

20 . A ____ allows a driver to gradually apply spring brakes.

Modulating control valve
Trailer air supply control
Relay valve