View instructions
Drivers who want to drive combination vehicles must pass the combination vehicles test. The Washington CDL combination test consists of 20 questions, and you'll need at least 16 correct answers to pass (80%). The test covers the combination vehicles section of the Washington CDL Manual. Take this practice test now to prepare for the actual WA CDL combination test!
1. When you use your mirrors while driving on the road, you should:
only use the driver's side mirror.
avoid checking them regularly.
check them quickly.
2. Which of these is NOT part of the basic method for shifting up?
Push in the clutch and shift to the higher gear at the same time.
Release the accelerator, push in the clutch and shift to neutral at the same time.
Accelerate while pressing the clutch and turn toward the driver's side.
3. Before entering an intersection, make sure that:
there's enough room to get at least halfway across.
accelerate smoothly and change gears as necessary.
there is sufficient space to clear it.
4. If you get stuck on the railroad tracks, the first thing you should do is:
stay in your vehicle and call 911.
immediately get out of the cab and move away from the tracks.
scream for help.
5. To secure the tractor you should:
Put on the parking brake and put the transmission in neutral.
Check that the kingpin and the fifth-wheel are aligned.
All of the above.
6. When transporting cargo, cargo securement must be checked within the first _____ miles of a trip and every _____ miles after.
50; 150
100; 150
50; 250
7. Dual tires:
should always come in contact with each other.
should come in contact with each other whenever possible.
should not come in contact with each other.
8. When checking air brakes on combination vehicles, which of the following is NOT part of checking that air flows to all trailers?
Going to the rear of the rig.
Pulling tractor forward until the fifth-wheel comes out from under the trailer.
Using the trailer handbrake to provide air to the service line.
9. How can you tell if a converter dollie has ABS?
There is an ABS plaque on the right side of the dolly.
There is a yellow lamp on the left side of the dolly.
There is a red lamp on the left side of the dolly.
10. By pushing the trailer air supply control knob in, you:
supply the trailer with air.
supply the tires with air.
shut the air off and put on the trailer emergency brakes.
Page 1 of 2
Next page

WA CDL Combination Test

Number of questions: 20
Correct answers to pass:16
Passing score:80%
Share This Online CDL Test
Rate this CDL Combination Test
4.9 out of 5
based on 108 votes