1 . Some air brake systems use alcohol:

To reduce the risk of ice forming in air brake valves.
To make the compressor run more efficiently.
To lubricate parts of the braking system.
To reduce the risk of rust forming on air brake valves.
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2 . Federal and state laws require:

Drivers to regularly inspect their vehicles.
Drivers to inspect their vehicles, but only if they believe there may be a problem.
Drivers to inspect their vehicles if planning to travel out-of-state.
Drivers to inspect their vehicles, but only if they will be transporting hazardous materials.
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3 . Before a vehicle with dual air brakes is driven, pressure of at least ____ should be built up in both braking systems.

10 psi
25 psi
50 psi
100 psi
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4 . In very hot weather, tires should be checked regularly because:

They may melt.
Air pressure may increase with the temperature.
The tread wears down extra quickly.
The lug nuts may loosen.
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5 . During an applied leakage test, the maximum leakage rate for a double combination vehicle is:

10 psi in a minute.
8 psi in a minute.
6 psi in a minute.
4 psi in a minute.
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6 . What is black ice?

A thick layer of ice on the road
A thin layer of ice on the road
Ice that is black from debris on the road
Ice that is easily seen
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7 . When stopping, the brake pedal:

Should be pressed down quickly.
Should be pressed down gradually.
Should be lifted up quickly.
Should be lifted up gradually.
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8 . If driving in a foggy area, you should not:

Decrease your speed.
Increase your speed.
Use your low beam headlights.
Turn on your four-way flashers.
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9 . What can change the height of a vehicle?

Color
Length
Weight
Number of windows
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10 . Most CDL holders have ____ licenses.

Excepted
Exempted
Non-excepted
Non-exempted
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11 . 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.
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12 . Belts in the engine compartment should be:

Frayed.
Tight.
Greasy.
Easy to slide off.
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13 . Which part of the truck is the air compressor connected to?

The transmission
The engine
The radiator
The door latch
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14 . Of the following, which is not a way to prevent drowsiness during a trip?

Getting an adequate amount of sleep before driving
Traveling with a passenger
Scheduling trips during hours when you would not normally be awake
Avoiding medications that may cause drowsiness
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15 . If a vehicle has air brakes, the air compressor drive belt should be checked before each drive. In what condition should the belt be?

Loose
Tight
Cracked
Bumpy
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16 . A dual air brake system:

Has a single air brake system, but uses two sets of controls.
Has one air brake system for each side of the truck.
Has two brakes for each wheel.
Has two separate air brake systems, but uses a single set of controls.
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17 . Brakes can get out of adjustment:

If they are hot.
During the winter.
If they are used at all.
If brakes on one side are used more often than brakes on the other side.
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18 . Passive railroad crossings:

Are controlled by flashing lights.
Are not controlled by any type of traffic control device.
Have gates that lower when trains are approaching.
Should never be crossed by a CMV.
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19 . Suspension system defects may include all of the following, except:

Cracked or broken spring hangers.
Missing or broken leaves.
Leaking shock absorbers.
Cracked lights.
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20 . If a load is 10 feet long, it should be secured by at least ____ tie-down(s).

One
Two
Three
Four
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21 . 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.
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22 . Which of the following is not a problem?

Loose or broken exhaust pipes
Loose or broken mounting brackets
Exhaust parts rubbing against fuel system parts
Exhaust system parts that are not leaking
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23 . 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.
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24 . When stopping a manual transmission vehicle, what should you do when the engine is close to idle?

Push in the clutch.
Push out the clutch.
Shift into neutral.
Shut off the vehicle.
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25 . Dry bulk tanks:

Usually have low centers of gravity.
Usually have high centers of gravity.
Usually are not allowed to cross railroad tracks.
Cannot be driven on interstates.
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26 . When doing an inspection, ensure that the brake pads are:

Covered with grease.
Covered with coolant.
Covered with oil.
Free of oil or grease.
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27 . If your brakes fail on a downgrade, your best hope to stop is:

An escape ramp.
Driving on the shoulder.
Stay on the road.
Hitting a slower vehicle in front of you.
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28 . Air tank drains:

Allow rain water to enter the tank.
Are used to drain water and compressor oil from the air tank.
Should never be opened.
Must remain open during transit.
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29 . Hydroplaning occurs when:

Tires lose traction with the surface of the road.
Tires have increased traction with the surface of the road.
Front tires have more traction that rear tires.
Front tires have less traction than rear tires.
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30 . If asked to sight-side back your vehicle into an alley, you should first:

Pull directly into the alley parking space.
Turn your vehicle to the right to position yourself directly in front of the alley.
Pull past the alley and stop perpendicular to the outer boundary.
Pull past the alley and stop parallel to the outer boundary.
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31 . When approaching a curve during the on-road driving test, you must do all of the following, except:

Check traffic thoroughly in all directions.
Reduce your speed before entering the curve.
Keep your vehicle in its lane.
Steadily use the brakes throughout the curve.
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32 . Air tank drains:

Allow rain water to enter an air tank.
Are used to drain water and oil from an air tank.
Should never be opened.
Must remain open during driving.
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33 . Trailers should:

Be overloaded to improve efficiency.
Not be overloaded because it is dangerous.
Not be overloaded because drivers are only paid to transport certain weights.
Be loaded with all the weight directly behind the cab.
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34 . Most drivers are the least alert:

In the morning.
In cold weather.
At night.
After work.
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35 . When checking the exhaust system, it should be:

Loose.
Leaking.
Fastened securely.
Cracked.
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36 . While driving, spring brakes are generally held in place by:

Air pressure.
Chocks.
Foundation brakes.
Sturdy ties.
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37 . To make driving at night easier, you should:

Keep your interior light turned on.
Adjust the instrument panel lights as dimly as you can while still being able to read the gauges.
Not take a nap before driving.
Use only your low beam headlights.
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38 . Which of the following is not an example of a driving hazard?

An accident on the roadway
An open road
A police car assisting a motorist on the side of the road
An ice cream truck
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39 . Which of the following is a good rule to follow when making a turn?

Honk your horn.
Use your arms to get the attention of other drivers.
Turn off your turn signal before entering the turn to avoid confusing other drivers.
Signal early.
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40 . During the vehicle inspection test, you will be asked to:

Change a tire.
Explain to the examiner what you would inspect and why.
Estimate the weight of a load in a trailer.
Change a windshield wiper.
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41 . 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.
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42 . What should happen if the air pressure in the braking system's air tanks falls below 60 psi?

The warning light will come on.
The vehicle will not shift out of gear.
The front lights will flash.
The steering wheel will lock up.
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43 . After starting the engine, oil pressure should reach a normal level:

Within a few seconds.
After about a minute.
After about four minutes.
Within 10 minutes of driving.
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44 . Texting while driving a CMV is:

Acceptable if the text is work-related.
Acceptable if there are fewer than 10 words in the text message.
Encouraged because it is safer than talking on the phone.
Prohibited.
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45 . After traveling under an overpass during the driving skills test, you may be asked to recall:

The posted clearance.
The posted weight limit.
The width of the opening.
If there was a shoulder near the roadway.
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46 . When an engine is started:

The brakes should be locked up.
Warning lights should come on and then quickly turn off.
The coolant temperature will decrease.
The hood must be open.
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47 . During a static leakage test, the maximum leakage rate for a single vehicle with air brakes is ____ in one minute.

1 psi
2 psi
3 psi
4 psi
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48 . When a tire goes flat, you may hear a loud bang. The truck will be affected:

Immediately.
After a short delay.
Only if the damaged tire is near the front of the truck.
Only if the truck is hauling a load.
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49 . Don't spend too much time looking at a single mirror because:

Conditions can change quickly.
Looking at mirrors can make you drowsy.
It can result in you driving a long distance without looking at the road.
The mirror may not provide an accurate view of the road.
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50 . How many daily hours of sleep does an adult need to maintain alertness?

Six to seven
Seven to eight
Eight to nine
Four to five
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