CDL - Complete Practice Test Study Package Practice Tests

Free CDL - Section 6 - Combination Vehicles Sample Practice Test

You are about to take the CDL - Section 6 - Combination Vehicles. This sample test consists of 10 multiple choice questions and answers.

Please select the best answer for each question below and then click "Grade It!"

1.
If a trailer does not have spring brakes, use ________________ to keep the trailer from moving.
2.
If there is more than one trailer, the rear wheels of the ______________ trailer will offtrack the most.
3.
The trailer air supply control on newer vehicles is a ____________________.
4.
Which one of the following is true about ABS?
5.
You would push the trailer air supply control in to:
6.
If you get stuck on railroad tracks, the first thing to do is:
7.
The tractor protection valve will close automatically if air pressure is ______________.
8.
Railroad-highway crossings often also cause problems when pulling trailers with ________________ underneath clearance.
9.
The earliest and best way to recognize that the trailer has started to skid is by __________________.
10.
Tractor protection valve controls or "emergency" valves on older vehicles _______________ operate automatically.

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About the CDL Driving Test

The Federal Commercial Motor Vehicle Safety Act of 1986 set minimum standards for a Commercial Drivers License in order to reduce accidents involving commercial motor vehicles. To comply with the ... (read more)

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