Texas CDL Combination 2 - DMV Written Test Questions with Answers - MCQGeeks.com

Q.1

What is a tractor protection valve?

A valve to keep air in the brake system should there be a bad leak
A valve that prevents the truck from being stolen
A valve that prevents the driver from going too fast
A valve that prevents the trailer from accidentally being released

Q.2

To help prevent rollovers, you should:

Accelerate quickly after stopping.
Drive slowly around turns.
Keep the load near the back of the trailer.
Keep the load on one side of the trailer.

Q.3

When coupling a trailer:

Make sure to couple matching glad hands.
Any glad hand can be connected to any other glad hand.
It is best to leave one glad hand unattached.
Only one set of glad hands should be connected.

Q.4

Rollovers happen when:

A truck driver is driving too fast.
The driver of a vehicle in front of a truck is moving to slowly.
A truck driver is driving too slowly.
ABS is working effectively.

Q.5

The service air line is attached to the:

Relay valves.
Supply line.
Emergency air line.
Steering wheel.

Q.6

When driving a bobtail tractor, you should be aware that:

Bobtails stop very easily.
Bobtails cannot drive as fast as tractors with semitrailers.
Bobtails are more difficult to stop than tractors with semitrailers.
Bobtails are illegal in most states.

Q.7

Large combination vehicles take the longest amount of time to stop:

When fully loaded.
When partially loaded.
When empty.
When mostly loaded.

Q.8

In a double or triple combination:

Cargo weight must be evenly distributed between all trailers.
The heaviest trailer should be positioned directly behind the cab.
The heaviest trailer should be positioned in the rear.
The weight of the trailers does not matter.

Q.9

Before backing your tractor under the trailer, make sure your trailer brakes are:

Disengaged.
Locked.
Deactivated.
Dry.

Q.10

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

Seeing other drivers' faces.
Seeing it in your mirrors.
Feeling it.
Listening to the radio.

Q.11

Having ABS on only one axle:

Does not change braking in any way.
Is not possible.
Will allow the driver additional control over their vehicle when braking.
Will cause extra strain on the other axles.

Q.12

Pull out the trailer air supply control to test:

The parking brake.
The trailer emergency brakes.
The trailer service brakes.
The landing gear.

Q.13

When backing a trailer, how should you turn the steering wheel?

Turn the top of the steering wheel in the direction you want the trailer to go.
Turn the top of the steering wheel in the direction opposite of where you want the trailer to go.
It doesn’t matter.
It depends on where the trailer is being backed.

Q.14

After finishing a pre-trip inspection, you should:

Close the service line valve.
Remove the service line valve.
Leave the emergency line valve open.
Leave the rear shut-off valves open.

Q.15

One way to prevent a rollover is to:

Move cargo to the left side of the rig.
Keep cargo centered on the rig.
Move cargo to the right side of the rig.
Keep cargo as far from the ground as possible.

Q.16

Driving a combination vehicle ____ than driving a single vehicle.

Is easier
Requires more driving skill
Is better for training
Is safer in inclement weather

Q.17

Simply changing lanes can cause:

A “crack-the-whip” effect, resulting in a rollover.
A trailer to straighten out.
Confusion over which lane the driver is hoping to use.
Other drivers to reduce their speed.

Q.18

A trailer will be most likely to swing around when:

It is full.
Traveling in a straight line.
It is empty.
The wheels are rotating.

Q.19

Proper coupling technique:

Is the same on all vehicles.
Is essential to the safe operation of a vehicle.
Includes ensuring that the fifth wheel plate is not greased.
Can be learned over time.

Q.20

When driving a tractor-trailer equipped with ABS, you should:

Stop harder than you would otherwise.
Use extra braking force to ensure the ABS kicks in.
Brake as you normally would.
Brake using less pressure than you would otherwise use.

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