CDL Practice Test Study Guide: Combination Vehicles

This CDL practice test study guide contains information for those drivers who operate a combination of vehicles with a GVWR of 26,001 or more pounds provided the GVWR of the vehicle(s) being towed is in excess of 10,000 pounds GVW, which includes ALL Class "A" license applicants.

49 CFR 383.111
Operators for the combination vehicle group shall have knowledge of:

Coupling and uncoupling — The procedures for proper coupling and uncoupling a tractor to semi-trailer.

Vehicle inspection — The objectives and proper procedures that are unique for performing vehicle safety inspections on combination vehicles.

Sections of this CDL Practice Test Study Guide include:


Driving Combination Vehicles
Combination Vehicle Air Brakes
Coupling & Uncoupling
Inspecting Combinations
Sample Test
Sample Test Answers
Pre-Trip Inspection Memory Aid