1 . Placards must be placed:

Within three inches of other markings.
So words or numbers are read from left to right.
Upside down.

2 . If the coolant temperature gauge goes above the highest safe temperature, you should:

Continue to drive.
Pull over and figure out what's wrong.
Run the air conditioner.

3 . When coupling:

You can assume all vehicles are the same.
Be sure that you are coupling correctly.
Cracks in the mounting are acceptable.

4 . Which of the following is not a sign of fatigue?

Difficulty focusing, with frequent blinking
Yawning repeatedly or rubbing eyes
Staying in your lane

5 . On any upgrade, gravity will:

Speed your vehicle up.
Slow your vehicle down.
Not impact your speed.

6 . Operating a tank vehicle that is transporting liquid cargo:

Is not permitted during normal business hours.
Is more difficult than operating a tank vehicle transporting solid cargo.
Is illegal.

7 . An example of required emergency equipment is:

A spare electrical fuse.
A loud horn.
A battery-operated flashlight.

8 . Hazardous materials may be transported:

By any driver with a CDL.
By a driver with a CDL and hazardous materials endorsement.
In rural areas by any driver.

9 . A Class 1 hazardous material is:

An explosive.
Solid.
Corrosive.

10 . Shut-off valves:

Prevent air from escaping air brake systems.
Prevent air from entering air brake systems.
Override vehicles that are out of control.

11 . On a slippery surface, stopping distance:

Is longer than on a regular driving surface.
Is not as long as on a regular driving surface.
Is about the same as on a regular driving surface.
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12 . Which type cargo is the most difficult to transport due to its shifting weight?

Liquids
Gases
Solids

13 . If a package of hazardous materials is not large enough to hold a label, it should be labeled:

With a barcode.
With a tag.
By being placed in a certain part of the trailer.

14 . Which of the following is acceptable if found during a pre-trip inspection?

Tires of mismatched sizes
Cracks in the tires
Tires manufactured by different makers

15 . What is a retarder?

A device that prevents a vehicle from going too fast
A device that prevents a vehicle from being too loud
A device that improves a vehicle's gas mileage

16 . The effects of alcohol are felt:

With the first drink.
Only after several drinks have been consumed.
At the legal limit.

17 . If a tank is found to be leaking, the driver should:

Try to fix the leak by welding the opening closed.
Get the leak fixed immediately.
Drive with their flashers on to warn other motorists.

18 . An improperly placarded vehicle:

May never be moved.
May only be moved in an emergency.
May be driven if the cargo is not radioactive.

19 . When the wheels of a trailer lock up:

The trailer will be drivable.
The trailer may swing around.
The vehicle will maintain steering.

20 . Who must label hazardous materials?

The mechanic
The shipper
The driver