|
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.
|
Oregon CDL Permit Test - Combination
(From the 2021 Oregon CDL driver handbook)
| Number of questions: | 20 |
| Passing score: | 16 |
Directions:
All applicants who are applying for a Class A CDL should be prepared to take the Combination test. This test covers information found in Section 6 of the Oregon Commercial Driver Manual. Section 6 provides the information needed to safely operate tractor-trailers, doubles, triples, and straight trucks with trailers. The test is made up of 20 multiple-choice questions, and applicants will need to correctly answer a minimum of 16 questions to pass. The Combination test is not a replacement for the Double/Triple endorsement test.
Passing grade —
4 or fewer errors
advertising
1.
In a double or triple combination:
2.
To prevent a rollover, cargo should be:
|
Placed near the front of a trailer.
|
|
|
Placed near the rear of a trailer.
|
|
|
Spread out on a trailer.
|
|
|
Loaded with most weight on the driver’s side of a trailer.
|
3.
Older trailers are not equipped with spring brakes. This means that if the air supply for a vehicle's air braking system leaks away:
|
The trailer will stop normally.
|
|
|
The trailer will not have brakes.
|
|
|
The trailer will speed up.
|
4.
Watching the road ahead:
|
Is more dangerous than only watching your mirrors.
|
|
|
Does not help you drive more safely.
|
|
|
Can help you avoid the need for sudden lane changes.
|
5.
The trailer hand valve should:
|
Be used for parking.
|
|
|
Be used only to test the trailer brakes.
|
|
|
Be used together with the brake pedal.
|
|
|
Be used on slippery surfaces.
|
6.
An air supply control lever should be in its "normal" position when you are:
|
Changing a tire.
|
|
|
Applying the trailer emergency brakes.
|
|
|
Pulling a trailer.
|
|
|
Using your spring brakes.
|
7.
What is a bobtail tractor?
|
A tractor without a semi-trailer
|
|
|
A tractor with two semi-trailers
|
|
|
A tractor that travels faster than the speed limit
|
Ace Your DMV Written Test
Get your Cheat Sheet Now!
Get your Cheat Sheet Now!
Wait, before you go
Ace your DMV Written Test with our Guaranteed Cheat Sheet.
