Is common if a vehicle is warmed up.

Is encouraged to improve gas mileage.

The maximum safe weight a tire can carry

The minimum safe weight a tire can carry

The weight of the air within a fully inflated tire

Mississippi CDL Double 1 - DMV Written Test Questions with Answers

Q.1

What should you do if the brake pedal does not build up pressure?

Upshift.
Downshift.
Hold the brake pedal down as far as it will go.
Pump the brakes.

Q.2

When coupling, you should:

Make sure to couple the proper glad hands.
Only couple one set of glad hands.
It is best to leave one glad hand loose.

Q.3

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.4

To prevent a trailer from rolling over, you should:

Speed up when nearing a corner.
Make sudden steering moves.
Take on-ramps faster than the posted speed limit.
Drive slowly around corners.

Q.5

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.

Q.6

When transporting cargo, drivers must check the securement of the cargo every:

10 miles.
150 miles.
500 miles.
1,000 miles.

Q.7

When loading a trailer, the heaviest cargo should be placed:

On top of the lightest parts of the cargo.
Under the lightest parts of the cargo.
At the rear of the trailer.

Q.8

When carrying a wide load, the driver should:

Drive as fast as possible.
Obtain special permits and follow special rules.
Honk at other drivers to get them to move from the lane closest to you.
Drive on the shoulder.

Q.9

Brake linings should be:

Loose.
Free of oil.
Soft.

Q.10

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.
You are experiencing a trailer jackknife.
Wheels have regained traction after a skid.
Air pressure is above 45 psi.

Q.11

When driving a vehicle equipped with an Anti-Lock Braking System (ABS), you should:

Stop harder than you would in a vehicle not equipped with ABS.
Use extra braking force to ensure the ABS kicks in.
Brake as you would in a vehicle not equipped with ABS.
Brake with less force than you would in a vehicle not equipped with ABS.

Q.12

Rough acceleration:

Can damage a vehicle.
Is common if a vehicle is warmed up.
Is encouraged to improve gas mileage.

Q.13

If you plan to slow down, you can warn drivers behind you by:

Slamming on the brakes.
Tapping the brakes a few times and before braking.
Turning on one set of turn signals.

Q.14

Before coupling, you can secure a second trailer by:

Depleting its air tanks.
Leaning it against a wall.
Removing its emergency line.
Setting wheel chocks.

Q.15

If you are driving and the ABS light comes on, it means that the ABS:

Cannot work due to weather conditions.
Has just been activated.
Is not working properly.

Q.16

Which of the following does not indicate bad brakes?

Cracked drums
Pads free of oil or grease
Very thin shoes

Q.17

When a vehicle goes around a corner, the rear wheels:

Follow the same path as the front wheels.
Follow a different path than the front wheels.
Should not be a concern to the driver.

Q.18

When using mirrors while driving, you should:

Look in the mirrors quickly.
Look in the mirrors for extended periods of time.
Use only the rearview mirror.
Use only the driver’s side mirror.

Q.19

To make driving at night easier, you should:

Keep your interior light turned on.
Adjust the instrument panel lights as dimly as you can while still being able to read the gauges.
Not take a nap before driving.
Use only your low beam headlights.

Q.20

What is a tire load?

The minimum safe weight a tire can carry
The maximum safe weight a tire can carry
The weight of a tire
The weight of the air within a fully inflated tire