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Posts published in “Combination Vehicles Practice Tests”


The Free CDL Combination Vehicles Practice Tests developed by CDL Digest each contain 20 multiple choice questions to help you pass the actual CDL Combination Vehicles Test on the first attempt. You must have a score of 80% (16 out of 20 questions) or better to pass. This test is required for any driver that will be operating a (Group A – 49 CFR 383.91(a)(1)) combination commercial motor vehicle (CMV), such as tractor-trailers, flatbed trucks, and cargo tankers.

Combination Vehicles is required for a Class “A” commercial learner’s permit (CLP) or commercial driver’s license (CDL). Any driver who fails the CDL Combination Vehicles Test will not be issued a Class “A” commercial learner’s permit (CLP) or commercial driver’s license (CDL).

CDL Combination Vehicles Practice Test 1

CDL Combination Vehicles Practice Test 2


Each Free Practice Test covers knowledge of the three (3) areas all commercial motor vehicle (CMV) drivers operating (Group A) combination vehicles must have as required by Federal Regulation (49 CFR 383.111(c)) as follows:

49 CFR 383.111(c)(1): Procedures for properly Coupling and Uncoupling a Tractor to a Semi-Trailer

49 CFR 383.111(c)(2): Procedures for Properly Performing Vehicle Inspections that are Unique to Combination Vehicles

49 CFR 383.111(c)(3): Safe Operating Practices and Procedures, including Air Brakes and Driving Combination Vehicles

The above listed CDL Combination Vehicles information for testing purposes can also be found in AAMVA’s “2005 CDL Test System (July 2010 or newer Version) Model Commercial Driver Manual”, which is made available at no cost at all 50 State Driver Licensing Agencies.

Section 6 of the CDL Manual covers the following topics for Combination Vehicles:

Driving Combination Vehicles

Air Brake Systems

Antilock Braking Systems (ABS)

Coupling and Uncoupling

Combination Vehicle Inspections

The source material used by CDL Digest to develop these practice test questions is very technical. It may be necessary for you to take the Practice Tests several times to make sure you have a thorough understanding of all the material before taking the actual test at your State Driver Licensing Agency.