Free Oregon CDL Double/Triple Trailers Practice Test 2023

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 2021 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
What is the function of a stop light switch?
When checking the low pressure warning signal, it should turn on before the pressure drops below what psi?
When driving a truck with more than one trailer, which trailer should be first behind the truck?
How often should alcohol containers be checked during cold weather?
After coupling, the air shut-off valves at the back of the first trailer should be:
You want to hook your combination to a second trailer that has no spring brakes. To do this without wheel chocks you should:
You should check trailer height before connecting a converted dolly to a second or third trailer. The trailer height is right when:
An air brake is made up of which of the following braking systems?
If the dolly has spring brakes, release them with:
The most common type of foundation brake is?
If your vehicle is not equipped with ABS, when you brake hard on a slippery surface what may occur?
When performing the controlled braking method for an emergency stop, you are _________.
Water and oil _______.
Why do some air brake systems have an alcohol evaporator?
Which of the following factors explains why the total stopping distance for air brakes is longer than that for hydraulic brakes?
Why should you never push the brake pedal down when the spring brakes are on?
You can test whether the trailer air system is charged by:
Vehicles with air brakes have pressure gauges connected to the _______.
A converter dolly is used:
A visual inspection after coupling should show that: