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Inspecting a Combination Vehicle

Inspecting a Combination Vehicle is a required knowledge area under 49 CFR 383.111(c)(2), covering inspection objectives and procedures unique to a combination vehicle's coupling and connections.

Practice Inspecting a Combination Vehicle

4 Questions

  1. During a walk-around inspection of a combination vehicle's coupling system, which of these is something the manual specifically says to check?
  2. How does the manual say a driver should confirm that air has reached the rearmost trailer of a multiple-trailer combination?
  3. During the combination-vehicle brake check, how does a driver test that the tractor protection valve is working correctly?
  4. How does the manual say a driver should test that a trailer's emergency brakes will actually engage if the air supply is lost?