Free practice test
Combination vehicles practice test
Combination vehicles is the Class A test — what changes the moment a trailer is attached. Handling, the trailer air system, and the coupling sequence that people lose trailers by rushing.
What it covers
- Rollover risk, load height, and cornering speed
- Rearward amplification and off-tracking
- Service and emergency air lines, and crossed glad hands
- The tractor protection valve and the red knob
- Coupling and uncoupling, step by step
- What a combination adds to the pre-trip inspection
The combination vehicles exam is 20 questions and is required for a Class A licence.
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