Free Oregon CDL Double/Triple Trailers Practice Test 2022

Do you know how to pair double or triple trailers? If you are planning to take the Oregon CDL double/triple trailer endorsement test, make sure to know it! Our Oregon CDL Practice Test has the same questions as the real exam which is based on the Oregon CDL manual. It covers most of the subject areas on the Double/Triple Trailers Test such as pulling double and triple trailers, the risk of rollover, managing space, and special considerations when hauling multiple trailers. In addition, each question has a detailed explanation that will help you understand the concept and answer future questions about it correctly. If you don't get the pass right away, you can take this CDL practice test an unlimited number of times to make sure you learn all the questions. Let’s try our Free Oregon CDL Double/Triple Trailers Practice Test today and pass your CDL endorsement exam! Good luck and keep driving safely!

Our CDL practice tests:
Based on 2022 OR commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
OR CDL Double/Triple Trailers Test format:
20 questions
16 correct answers to pass
80% passing score
List of questions
1.
What is proper braking technique for drivers travelling down a hill or any other downgrade?
2.
How can you be sure you supplied air to a second trailer?
3.
You are driving a 100-foot truck with double trailers at 30 mph. The road is dry, and visibility is good. You should keep at least ______ seconds of space ahead of you.
4.
Automatic slack adjusters ________.
5.
Air brakes take longer to stop than hydraulic brakes because _______.
6.
How do air-operated disc brakes work?
7.
When testing the coupling of the double trailer, the landing gears of the rear trailer should be:
8.
The increased likelihood of doubles and triples turning over is called:
9.
The air compressor should pump air starting at what psi?
10.
On newer vehicles, the parking brake control knob is typically yellow, but on older vehicles, the parking brake might be what color?
11.
The service brake system ________.
12.
In tractors and straight trucks spring brakes will come on fully when the air pressure drops to what range?
13.
If you have manual transmission _________.
14.
Where are the brake drums located?
15.
Why should you drain water from compressed air tanks?
16.
What affects the stopping distance for air brakes?
17.
When inspecting doubles and triples shut-off valves, which of the following is true?
18.
When the mechanical arm of a wig wag drops into your view that means the pressure in your system has dropped below what psi?
19.
Why is it so crucial to drain your vehicle's air tanks at the end of each day of driving?
20.
When uncoupling the rear trailer, which of these should be done first?