Is a major cause of fatal crashes.

Can be a good way to get to your destination quickly.

Should only be done if the roadway is dry.

Is acceptable in light traffic.

Is necessary to warm up parts of the engine.

Is encouraged to improve gas mileage.

Should be done on surfaces with poor traction.

Are more likely to roll over than empty rigs.

Are less likely to roll over than empty rigs.

Are just as likely to roll over as empty rigs.

Usually reacts well to hazards.

Is usually aware of what is happening around them.

Is a concern, whether passengers are visible or not.

Is not a concern if passengers are not unloading.

Texas CDL Tank 1 - DMV Written Test Questions with Answers

Q.1

If transporting chlorine, what must be kept in the vehicle?

A phone with emergency numbers programmed
An approved gas mask
A chemical suit
Directions for emergency personnel

Q.2

Accelerating roughly is:

Encouraged at slow speeds.
Encouraged at all speeds.
Discouraged, as it may cause damage to the vehicle.
Discouraged, as it may confuse other drivers.

Q.3

When driving, it is important to:

Keep your attention focused in front of your vehicle.
Look only to the front and right side of your vehicle.
Look only to the front and sides of your vehicle.
Look to the front, sides, and rear of your vehicle.

Q.4

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

The suspension springs to extend.
The tractor protection valve to open.
The rear trailer to detach from the combination.
The emergency brakes to activate.

Q.5

Drivers are usually the least alert:

In the morning.
In the early evening.
Late at night.
In the afternoon.

Q.6

Due to the risk of liquid surge in tanks, you should:

Accelerate slowly.
Accelerate quickly.
Swerve often.
Drive on the shoulder.

Q.7

When loading hazardous materials, you should do all of the following, except:

Set the parking brake.
Load the materials away from heat.
Watch for signs of leakage.
Use a hook.

Q.8

Driving too fast:

Is a major cause of fatal crashes.
Can be a good way to get to your destination quickly.
Should only be done if the roadway is dry.
Is acceptable in light traffic.

Q.9

While driving a vehicle, if an unusual noise or feeling occurs, the driver should:

Assume it is not a concern and continue driving.
Hope the vehicle makes it until it is switched to another driver.
Check the vehicle to determine the proper solutions.
Drive on the shoulder.

Q.10

Belts in the engine compartment should be:

Frayed.
Tight.
Greasy.
Easy to slide off.

Q.11

If an Anti-Lock Braking System (ABS) is equipped on a trailer but not on a tractor:

The truck should not be driven because ABS needs to be on both the tractor and trailer.
The truck should be driven more slowly than usual.
The tractor should not be used and a new tractor with ABS should be located.
The tractor and trailer can still be used together.

Q.12

Rough acceleration:

Can damage a vehicle.
Is necessary to warm up parts of the engine.
Is encouraged to improve gas mileage.
Should be done on surfaces with poor traction.

Q.13

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.
Assume the vehicle has ABS.

Q.14

Fully-loaded rigs:

Are less likely to roll over than empty rigs.
Are more likely to roll over than empty rigs.
Are just as likely to roll over as empty rigs.
Should not be driven.

Q.15

A combination vehicle has:

One air line.
Two air lines.
Three air lines.
Four air lines.

Q.16

To test the trailer service brakes, you should:

Move the vehicle forward slowly and apply the brakes with the brake pedal.
Reverse the vehicle slowly and apply the brakes with the hand control.
Reverse the vehicle slowly and apply the brakes with the brake pedal.
Move the vehicle forward slowly and apply the brakes with the hand control.

Q.17

A distracted driver:

Usually reacts well to hazards.
Usually has slowed perception.
Is usually aware of what is happening around them.
Is a good person to follow.

Q.18

What can change the height of a vehicle?

Color
Length
Weight
Number of windows

Q.19

Why are roads especially slippery right after it begins to rain?

The water mixes with oil and grease on the road.
Roads are naturally slippery.
Gravel often gets washed to the middle of the lane.
Tires are not usually designed to drive in rain.

Q.20

A stopped bus:

Is not a cause for concern.
Is not a concern if passengers are not unloading.
Should not be on the roadway.
Is a concern, whether passengers are visible or not.