Should not be used on the front of a bus.

Should not be used on any vehicle.

Should not be used on trucks hauling gravel.

Can be avoided by not engaging in complex conversations with others.

Can be avoided by eating while driving.

Can be increased by pre-programming radio stations.

Idaho CDL Tank 1 - DMV Written Test Questions with Answers

Q.1

When you are pulling a trailer, the air supply control lever should be in its ____ position.

Emergency
Supply
Normal

Q.2

Roads are especially slippery right after it begins to rain because:

The water mixes with oil and grease on the road.
Tires are not made to drive in wet weather.
The water yet hasn't absorbed the dirt and grease.

Q.3

You may leave a vehicle that is carrying explosives unattended:

Under a bridge.
In a safe haven.
On the shoulder of a highway.

Q.4

If you remain in neutral for too long while switching gears:

The vehicle will speed up.
You may have trouble putting the vehicle into the next gear.
You may kill the engine.

Q.5

To transport hazardous materials, what does a driver need?

A CDL only
A CDL with a hazardous materials endorsement
A CDL with a tank endorsement
A CDL with a cargo endorsement

Q.6

Regrooved tires:

Should not be used on any vehicle.
Should not be used on the front of a bus.
Should not be used on trucks hauling gravel.

Q.7

When backing up while coupling a trailer, the tractor should be positioned:

Directly in front of the trailer.
Directly next to the trailer.
Parallel with the trailer.

Q.8

The safety belt should:

Not be adjustable.
Latch securely.
Be frayed.

Q.9

Cargo inside a trailer:

Does not need to be secured.
Should be stacked no more than three feet high.
Should be secured to prevent movement.

Q.10

On any upgrade, gravity will:

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

Q.11

On a curve, the posted speed limit:

Is safe to be driven in any vehicle.
Can still permit a vehicle to tip over.
Is understood to be the minimum legal speed limit.

Q.12

Distracted driving:

Can be avoided by eating while driving.
Can be increased by pre-programming radio stations.
Can be avoided by not engaging in complex conversations with others.

Q.13

If you are confronted with an aggressive driver, you should:

Make eye contact.
Try to stay in their way.
Ignore any hand gestures.

Q.14

When backing a trailer, you must turn the steering wheel:

In the direction you want the trailer to move.
In the direction opposite of where you want the trailer to move.
To the left until backing is complete.

Q.15

The National Response Center must be notified of an incident resulting in any of the following, except:

Death.
Injury requiring hospitalization.
Injury not requiring hospitalization.

Q.16

When backing with a trailer, turning toward the driver’s side is encouraged:

Because it allows the driver a better view.
Because turning toward the passenger side is illegal.
Because other drivers can offer assistance.

Q.17

Which of the following is the best advice for driving in fog?

Try not to drive in fog.
Use your high beam headlights.
Turn off your lights.

Q.18

The emergency air line supplies air to the:

Relay valves.
Trailer air tanks.
Signal line.

Q.19

A tread depth of ____ should be in every major groove of a front tire.

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

Q.20

____ is responsible for properly labeling hazardous materials.

The shipper
The loader
The driver