1 . To prevent fatigue while driving, you should:

Keep the cab warm.
Keep the cab cool.
Keep the cab poorly ventilated.
Close the vents.
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2 . When driving at night, you should do all of the following, except:

Make sure you are rested.
Make sure your glasses are clean.
Wear sunglasses.
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3 . A vehicle that is smaller than your vehicle:

Will usually be able to stop faster than your vehicle.
Will usually take more time to stop than your vehicle.
Will take about the same amount of time to stop as your vehicle.
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4 . How long is a Commercial Learner Permit valid?

One week
One month
Six months
Two years
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5 . Too little weight on a steering axle can result in:

Poor traction.
Increased visibility.
Longer stopping distances.
Improved gas mileage.
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6 . 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.
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7 . Air storage tanks:

Are not allowed on a vehicle.
Hold compressed air for the brakes.
Should be drained of excess air after every trip.
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8 . If asked by a law enforcement officer to take a test to determine your blood alcohol concentration (BAC):

You can refuse to take the test without a penalty.
You can refuse taking the test but will be required to pay a $50 fine.
You will lose your CDL if you refuse to take the test.
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9 . When conducting a vehicle inspection, you must show each of the following, except:

That the oil pressure gauge is working.
That the oil pressure warning light turns off, or that the gauge shows increasing or normal oil pressure.
That the oil temperature gauge, if equipped, rises to the normal operating range.
That the oil pressure gauge comes on when brakes are used.
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10 . Distracted drivers may be:

Staying within their lanes.
Traveling at consistent speeds.
Preoccupied with using their cell phones.
Not talking to anyone else in their vehicles.
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11 . A tread depth of ____ should be in every major groove of a tire that is not in the front of a commercial motor vehicle.

1/32 of an inch
2/32 of an inch
4/32 of an inch
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12 . If you are being tailgated, you should:

Drive on the shoulder.
Pull off the roadway.
Drive faster.
Allow the vehicle to pass.
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13 . In cold weather, an alcohol evaporator should be checked and filled:

Once a week.
Every day.
Every hour.
Once a month.
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14 . Vehicles carrying a load that extends more than four feet beyond the rear of the vehicle must:

Drive on the shoulder.
Drive with the flashers on.
Attach a red flag to the load during daylight hours.
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15 . When inspecting underneath your vehicle for leaking fluids, you must look for all the following, except:

Fresh oil.
Coolant.
Grease.
Windshield wiper fluid.
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16 . Which of the following crimes disqualifies a person from obtaining a hazardous materials endorsement for life?

Murder
Arson
Speeding
Loitering
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17 . 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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18 . If your vehicle is equipped with a cargo lift, you should ensure that:

The lift is loosely attached.
The lift is not leaking.
The lift is fully extended.
The lift is the proper color.
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19 . If convicted of any traffic violations, excluding parking violations, you must:

Notify your employer within 30 days.
Place a sign on the back of your vehicle noting the conviction.
Forfeit your CDL for six months.
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20 . Bracing is used to:

Make items stand taller in a trailer.
Prevent items from moving in a trailer.
Make it easier to unload items from a trailer.
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21 . After beginning a trip while transporting cargo, a driver should check the cargo again within the first:

Two miles.
10 miles.
50 miles.
100 miles.
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22 . A person working on a disabled vehicle on the shoulder of a road:

Will likely pay attention to traffic on the road.
May be focused on the repair and not paying attention to roadway traffic.
Is exempt from traffic laws.
Should not be assisted.
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23 . When backing, it is best to:

Rely only on the passenger’s side mirror.
Try to back up quickly.
Turn toward the passenger’s side whenever possible.
Use a helper, if possible.
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24 . Braking mechanisms are located ____ a brake drum.

Outside
Inside
Next to
On top of
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25 . 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.
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26 . A Social Security Number is:

Printed on a CDL.
Used to identify driver records between states.
Used as a driver license number.
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27 . The center of gravity in a trailer should be:

As high as possible.
As low as possible.
At the rear of the trailer.
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28 . 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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29 . Bridges usually:

Freeze, but only once the temperature drops significantly below 32 degrees Fahrenheit.
Freeze after other road surfaces freeze.
Freeze before other road surfaces.
Have heaters to prevent them from freezing.
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30 . Braking mechanisms are located inside:

The fifth wheel.
A brake drum.
The landing gear.
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31 . To be a school bus driver, an applicant must be at least:

15 years old.
18 years old.
21 years old.
25 years old.
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32 . Water that has collected on a roadway can cause:

Hydroplaning.
Acceleration.
Stopping.
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33 . When you press the brake pedal in a vehicle with S-cam brakes, air pressure pushes out the rod and moves the:

Slack adjuster.
Axle.
Brake drum.
Alcohol evaporator.
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34 . Drivers trapped behind a slow-moving vehicle often:

Follow the vehicle too closely.
Allow the vehicle plenty of space.
Are happy with the speed of travel.
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35 . When checking power steering hoses during a pre-trip inspection, you should look for:

Leaks.
Secure connections to the battery.
Extra hose pieces available for repairs.
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36 . 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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37 . A CMV driver operating a passenger bus:

Is exempt from federal medical standards.
Is required to abide by federal medical standards, but only if operating a school bus.
Must abide by federal medical standards.
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38 . In general, the length limit for a combination of 2 vehicles and load is:

10 feet
30 feet
65 feet
100 feet
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39 . What do air brakes use to make the brakes work?

Compressed air
Outside air
Non-compressed air
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40 . Brakes out of adjustment will:

Work properly.
Cause some of the brakes to overwork and malfunction.
Allow better acceleration.
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41 . A distracted driver:

Usually follows the rules of the road.
Usually has slowed perception.
Is a good person to follow.
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42 . Brakes can get out of adjustment quickly, especially:

If they are hot.
In the winter time.
If they are used frequently.
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43 . In general, the length limit for a single vehicle and load is:

10 feet.
30 feet.
40 feet.
60 feet.
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44 . An item that is 40 feet long placed on a flatbed trailer should be secured by at least ____ tie-down(s).

One
Two
Three
Four
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45 . Shortly after a tire has been changed, you should:

Stop to make sure the lug nuts are still tight.
Repair the brakes.
Deflate the tire to 10 psi.
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46 . In general, the legal maximum height for a vehicle and load is:

10 feet
13 feet 6 inches
16 feet
22 feet
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47 . In general, the legal maximum width of a vehicle and load is:

5 feet
6 feet
8 feet 6 inches
12 feet
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48 . As part of a pre-trip inspection, you should look for all of the following, except:

Tires with too much air pressure.
Tires with too much wear.
Tires made by different manufacturers.
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49 . 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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50 . In an engine compartment, loose belts will:

Not turn the water pump and/or fan properly, causing the engine to overheat.
Make the engine run more efficiently.
Make the fan run too much, causing the engine to run too coolly.
Last longer than tight belts.
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