Free Idaho CDL Combination Vehicles Practice Test 2022

You have to pass the Idaho CDL combination vehicles endorsement to get ready for propelling your career with your license. You are looking for good source material for your coming CDL test? You are in the right place. Our Idaho CDL practice test is a great resource for beginners. The test is designed for you to have exactly the experience of the exam as you will be more familiar with both the test format and the subject. They cover topics ranging from combination vehicle maintenance to safely driving a complex rig. Each question is based on the official Idaho CDL manual so you can be sure that the information in our test is accurate and relevant to your examination. In addition, each CDL practice test question has a detailed explanation so that it is very useful for you to learn from your mistakes. Preparing well before test day with questions and content that we cover. Start with our Free Idaho CDL Combination Vehicles Practice Test today and walk out with your endorsement!

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 Combination Vehicles Test format:
20 questions
16 correct answers to pass
80% passing score
List of questions
1.
Air brake equipped trailers made before 1975:
2.
How much space should be allowed between the upper and lower fifth wheel after coupling?
3.
The tractor protection valve will close, and the trailer emergency brakes will come on when there is a major leak in the _____ brake line.
4.
If your trailer goes into a skid, you should do all of the following except:
5.
Supplied by the service line from the tractor, each trailer or dolly has its own:
6.
There are two things that a driver can do to prevent a rollover. They are: (1) keep the cargo as close to the ground as possible and (2):
7.
To help prevent rollover, keep the center of gravity of the load as low as possible, and:
8.
If the service line comes apart while you are driving a combination vehicle, but the emergency line stays together, what will happen right away?
9.
The emergency air line controls the emergency brakes on combination vehicles, and:
10.
Improperly greased or lubricated fifth wheels will cause:
11.
Converter dollies:
12.
Some of the points for inspecting the coupling include the following except:
13.
How much space should there be between the upper and lower fifth wheel?
14.
Like tractor air tanks, trailer air tanks should be kept free of dirt and oil by:
15.
The safety latch for the fifth wheel locking lever must be _____ for a coupling to be complete.
16.
The hand valve should be used:
17.
After connecting the air lines but before backing under the trailer you should:
18.
Before getting out to inspect the coupling, secure the vehicle by putting transmission in neutral, shutting off engine and taking the key with you, and:
19.
The fifth wheel locking lever is not locked after the jaws close around the kingpin. This means that:
20.
Glad hands are usually connecting which of these?