Practice question

What can happen if red and blue glad hands are crossed?

  1. Trailer brakes may not work correctly and the system may not charge correctly
  2. Trailer lights get brighter
  3. The fifth wheel locks twice
  4. Landing gear raises automatically

Answer: A — Trailer brakes may not work correctly and the system may not charge correctly

The correct answer is shown above. Try the full quiz for additional practice.

Practice more: Michigan CDL Combination Practice Questions - Michigan CDL Combination Vehicles Test Exam →