Have heaters to prevent them from freezing.

You should first walk the area to become more familiar with obstacles.

You should rely on your mirrors to guide you.

You should look straight ahead.

Control liquid surge while still allowing liquids to flow through the tank.

Are damaged and should not be used.

Maine CDL Tank 1 - DMV Written Test Questions with Answers

Q.1

A driver should test the tractor protection valve by:

Pulling the yellow, diamond-shaped knob.
Releasing air with the brake pedal.
Unlocking the trailer doors.

Q.2

When applying for an original or renewed HazMat endorsement, you must undergo a background check through which agency?

The Transportation Security Administration
The Federal Bureau of Investigation
The Department of Energy

Q.3

Do not base your decision to shift gears on:

The speed of your engine (rpm).
The speed of the road (mph).
The actions of the vehicle next to you.

Q.4

Compared to regular trailers, tanks usually have:

Lower centers of gravity.
Higher centers of gravity.
No centers of gravity.

Q.5

Bridges usually:

Do not freeze.
Have heaters to prevent them from freezing.
Freeze before other surfaces.

Q.6

If you must make a quick stop while transporting liquids, it may be a good idea to use the:

Controlled braking method.
Sharp braking method.
Cautious braking method.

Q.7

Of the following, which is not a recommended way to spot potential signs of trouble?

Watching the gauges
Using your senses
Checking critical items only at the beginning and end of a trip

Q.8

Backing with a trailer is dangerous because:

It is difficult to see behind the vehicle.
Most trucks do not have the ability to move in reverse.
Cargo may fall out of the trailer.

Q.9

How do ice cream trucks become hazardous to other drivers?

Ice cream trucks must be kept cold.
Children often run toward an ice cream truck without looking for other traffic.
Ice cream trucks leave trails of water and ice on the roadway.

Q.10

The use of a hand-held mobile device while driving is:

Prohibited.
Acceptable if weather conditions are clear.
Permitted if use is work-related.

Q.11

If the emergency air line loses pressure:

The Anti-Lock Braking System will activate.
The service air line will activate.
The emergency brakes will activate.

Q.12

If driving so slowly that you could impede other drivers, you should:

Drive in the left lane.
Drive while using your four-way flashers.
Drive without using any lights.

Q.13

Operating combination vehicles usually requires ____ operating single vehicles.

Less skill than
About the same level of skill as
More skill than

Q.14

When connecting a converter dolly to a second trailer, the trailer height should be ____ the center of the fifth wheel.

Level with
Slightly higher than
Slightly lower than

Q.15

If backing a truck:

You should rely on your mirrors to guide you.
You should first walk the area to become more familiar with obstacles.
You should look straight ahead.

Q.16

A person attending a placarded vehicle may be:

In the sleeper berth.
Either awake or asleep inside the vehicle.
Within 100 feet of the vehicle.

Q.17

Baffled tanks:

Are damaged and should not be used.
Control liquid surge while still allowing liquids to flow through the tank.
Control liquid temperatures.

Q.18

When approaching a railroad crossing while transporting chlorine:

You must stop before crossing the tracks.
You must reduce your speed before crossing the tracks.
You may proceed across the tracks without stopping if no warning lights are flashing.

Q.19

While driving, gauges are:

Unreliable.
Unpredictable.
To be monitored for potential signs of trouble.

Q.20

Cargo tanks should never be completely full because:

There needs to be room for the liquid to expand.
Regulations require three feet of clearance between the top of the liquid and the roof of the tank.
The tank would be too heavy.