Free Idaho CDL Double/Triple Trailers Practice Test 2022

Do you know how to pair double or triple trailers? If you are planning to take the Idaho CDL double/triple trailer endorsement test, make sure to know it! Our Idaho CDL practice test has the same questions as the real exam which is based on the Idaho 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 Idaho 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 ID commercial driver's license manual
Full answers + detailed explanations
Perfect for first-time, renewal applicants
ID CDL Double/Triple Trailers Test format:
20 questions
16 correct answers to pass
80% passing score
List of questions
1.
What is the function of an "application pressure gauge"?
2.
What should you do when the low air pressure warning comes on?
3.
What is proper braking technique for drivers travelling down a hill or any other downgrade?
4.
How can you be sure you supplied air to a second trailer?
5.
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.
6.
An application pressure gauge shows how much air you are applying to the brakes. Increased application pressure to maintain the same speed indicates that __________.
7.
When testing the coupling of the double trailer, the landing gears of the rear trailer should be:
8.
With the hand valve on, you should test the trailer brakes by opening the service line valve at the rear of the trailer. When you do this, you should hear:
9.
If the rear trailer does not have spring brakes, disconnecting the emergency line after charging will:
10.
When uncoupling twin trailers you should park:
11.
When inspecting the shut-off valves on doubles and triples, all of the following is true except:
12.
When the safety valve releases air this indicates ___________.
13.
Why should you check the brake adjustment often?
14.
Why does a heavily-loaded vehicle take longer to stop than a lightly-loaded vehicle?
15.
Where is compressed air stored?
16.
In tractors and straight trucks spring brakes will come on fully when the air pressure drops to what range?
17.
If the air compressor does not have its own oil supply, how is it lubricated?
18.
To apply the parking brakes, you should _______.
19.
Vehicles with air brakes have pressure gauges connected to the _______.
20.
Why should you not drive your vehicle if the air pressure does not build up quickly enough?