1 . The minimum tread depth of all major grooves on tires that are not on the front of a CMV should be a minimum of:

1/32 of an inch.
2/32 of an inch.
4/32 of an inch.
3/4 of an inch.

2 . Dual tires should be in contact with each other.

True
False

3 . A fire extinguisher is a required piece of safety equipment.

True
False

4 . Tread depth in the major grooves on a front tire should be at least:

1/32 of an inch.
2/32 of an inch.
4/32 of an inch.
3/4 of an inch.

5 . A vehicle must carry a minimum of two red reflective triangles.

True
False

6 . A flare is required emergency equipment.

True
False

7 . The person responsible for the safe transport of cargo is the driver.

True
False

8 . Which of the following statements is correct?

Rims with a missing lug nut are acceptable if there are at least four other lug nuts on the rim.
A cracked lock ring is acceptable if the vehicle is being driven at speeds under 55 mph.
A missing clamp is dangerous and should be corrected.
Welded repairs are acceptable for wheels on rear axles.

9 . Rough acceleration:

Is a good way to stay awake on long trips.
Is distracting.
Can cause mechanical damage.
Should be used to prevent rust from forming.

10 . Which of the following is acceptable?

Dual tires that do not come into contact with each other
Tires of mismatched sizes if used only on short trips
Retreaded tires on the front of a school bus
Tires with cracks

11 . A broken exhaust system:

Can allow poisonous fumes into the cab.
Does not cause problems.
Should not cause concern.
Helps the vehicle run better.
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12 . A rear tire with a tread depth of 2/32 of an inch is acceptable.

True
False

13 . The most important reason to do a pre-trip inspection is that it helps ensure safety.

True
False

14 . Drivers may use ____ red reflective warning triangles when their vehicle is stopped on the side of the road.

Two
Three
Five
Seven

15 . What should be done shortly after a tire has been changed?

The driver should stop to make sure the lug nuts are still tight after driving for a bit.
The driver should repair the brakes.
The driver should deflate the tire to 10 psi.
The driver should inflate the tire.

16 . Which of the following is not an indicator of when to change gears?

Engine speed (rpm)
Road speed (mph)
The speed of the vehicle next to you

17 . Noting the road speed is one way to determine when to upshift.

True
False

18 . Tires with deep cracks are usually acceptable.

True
False

19 . Three red reflective triangles should be carried within the vehicle

True
False

20 . When switching gears, what happens if you remain in neutral for too long?

The vehicle will speed up.
You may have trouble getting the vehicle into the next gear.
You may kill the engine.
The vehicle will be difficult to stop.