Idaho CDL Double 1 - DMV Written Test Questions with Answers - MCQGeeks.com

Q.1

Placards should be used:

Any time a vehicle is carrying hazardous materials.
When there is extra space on a truck.
Only when the amount of hazardous materials on a truck exceeds 200 pounds.

Q.2

When entering a curve, you should:

Shift into neutral.
Use the shoulder.
Downshift.

Q.3

Alcohol evaporators are:

Illegal.
Used to add alcohol to braking systems to prevent items from freezing.
Only allowed on vehicles carrying hazardous materials.

Q.4

Rust around wheel nuts may mean:

It rained recently.
The nuts are loose.
The nuts are too tight.

Q.5

If the emergency air line loses pressure:

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

Q.6

If a vehicle's Anti-Lock Braking System (ABS) is malfunctioning:

The vehicle will have no brakes.
The vehicle will still be able to brake.
The vehicle will likely travel faster than usual.

Q.7

If there is ice on the front of your side mirror:

You should exit the roadway.
You can expect ice to be on the roadway.
There will not be ice on the roadway.

Q.8

Alcohol can be removed from your system:

By exercising.
By drinking coffee.
By waiting.

Q.9

If a trailer begins to skid, it is best for the driver to:

Release the brakes.
Accelerate.
Quickly turn the steering wheel in one direction, then in the other.

Q.10

Rolling backward when beginning to accelerate is dangerous because:

The transmission may be damaged.
The truck is not made to go backwards.
You may hit a vehicle behind you.

Q.11

When a vehicle is started, the coolant temperature should:

Decrease.
Rise slowly.
Hold steady.

Q.12

Before a trip, you should make a visual check of a coupling to ensure that:

There is a space between the upper and lower fifth wheel.
The kingpin is free from all dirt and dust.
The locking jaws are closed on the kingpin.

Q.13

If approaching a vehicle with a distracted driver, you should:

Quickly pass the vehicle.
Maintain a safe distance from the vehicle.
Closely follow the vehicle.

Q.14

Slow down and be extra careful:

When traveling in normal traffic.
When driving on dry pavement.
When approaching a work zone.

Q.15

In a dual air brake system:

Air tanks are shared between both systems.
Each system has its own air tanks.
You must designate which system you are using.

Q.16

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.17

What is the Johnson bar?

A hand valve that works the trailer brakes
A valve that indicates the fuel level
A valve that limits the amount of cargo

Q.18

Before driving a power steering-equipped vehicle, you should make sure that:

The fluid is at a proper level.
The hoses are connected to the battery.
Any leak is small.

Q.19

The best way to recognize that your trailer has started to skid is by:

Seeing other drivers' faces.
Checking the trailer in your mirrors.
Feeling the trailer move.

Q.20

If your wheels being to spin when accelerating on a poor traction surface, you should:

Use the brakes.
Take your foot off the accelerator.
Continue to accelerate.

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