Doubles and Triples Endorsement Practice Test 1 contains knowledge and safe driving information that all commercial drivers should know to successfully pass the CDL “Doubles…
Posts published in “Double Triple Trailer Endorsement Practice Tests”
The Free CDL Double Triple Trailer Endorsement Practice Tests developed by CDL Digest each contain 20 multiple choice questions to help you pass the actual CDL Doubles and Triples Endorsement 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) commercial motor vehicle (CMV) with two or three trailers.
This endorsement can only be added to a Class “A” commercial driver’s license (CDL).
INFORMATION COVERED ON THE PRACTICE TESTS:
Each Free Practice Test covers knowledge of the five (5) areas all commercial motor vehicle (CMV) drivers towing two or three trailers must have as required by Federal Regulation (49 CFR 383.115) as follows:
49 CFR 383.115(a): Procedures for Assembly and Hookup of Double and Triple Bottom Units
49 CFR 383.115(b): Proper Placement of the Heaviest Trailer in the Combination
49 CFR 383.115(c): Handling and Stability Characteristics, including, Off-Tracking, Steering Response, Sensory Feedback, Braking, Oscillatory Sway, Rollover in Steady Turns, and Yaw Stability in Steady Turns
49 CFR 383.115(d): Problems in Traffic Operations
49 CFR 383.115(e): Operating Practices and Procedures not Otherwise Specified
The above listed CDL Double Tiple Trailer Endorsement 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 7 of the CDL Manual covers the following topics for Double and Triple Trailers:
Pulling Double and Triple Trailers
Coupling and Uncoupling
Double and Triple Trailer Inspections
Checking Air Brakes
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 CDL Double Triple Trailer Endorsement Test at your State Driver Licensing Agency.