1 . If you notice a cargo leak, you should identify the leaking hazardous materials by:

Smelling the materials.
Touching the materials.
Using the shipping papers.

2 . When loading liquid cargo, you should keep in mind:

That the weather will change throughout the drive.
How quickly you will arrive to your destination.
How much the liquid will expand in transit.
That the liquid will move less in a tank that is completely full.

3 . Before operating a tank vehicle, it is important to:

Clean the tires.
Check grounding and bonding cables.
Loosen manhole covers.
Open all valves.

4 . The ____ trailer is the most likely to turn over if a driver takes a turn too quickly.

Front
Last
Middle

5 . A loss of air pressure in the emergency line will cause:

The service brakes to activate.
The tractor protection valve to close.
The rear trailer to detach from the combination.

6 . If you are operating a vehicle built before 1998 and are unsure if the trailer has an Anti-Lock Braking System (ABS), you can:

Check for wheel speed sensors coming from the back of the brakes.
Look for a red light on the front right corner of the converter dolly.
Pump the air brakes to activate the ABS.

7 . When loading liquid cargo, you should take the ____ into account.

Weight of the liquid
Quality of the roads
Time of day

8 . The amount of liquid cargo than can be loaded into a tank depends on:

The time of year.
Legal weight limits.
The ability of the driver.
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9 . When connecting a converter dolly to a second or third trailer, the trailer height should be:

Slightly higher than the center of the fifth wheel.
Level with the center of the fifth wheel.
Slightly lower than the center of the fifth wheel.

10 . When driving on a wet road, you should reduce your speed by:

About one-half.
About one-third.
About one-quarter.

11 . To know which placard to use, you need to know:

The hazard class of the materials.
The type of container that is holding the materials.
The destination of the materials.

12 . In a vehicle equipped with an automatic tractor protection valve, the valve will pop out when air pressure drops to a level between:

20 and 45 psi.
75 and 105 psi.
50 and 65 psi.

13 . Operating a commercial motor vehicle with a minimum blood alcohol content (BAC) of ____ is illegal.

0.02 percent
0.04 percent
0.08 percent

14 . What does a shipping paper describe?

The materials being transported
How the materials will be transported
Who should accept the materials being transported

15 . During a trip, the ____ should be open.

Rear service line shut-off valve
Rear supply line shut-off valve
Inner shut-off valves