Practice question

Which trailer lights must be checked before driving?

  1. Only the cab dome light
  2. Brake lights, turn signals, tail lights, and marker lights
  3. Only headlights on the tractor
  4. Only dashboard backlighting

Answer: B — Brake lights, turn signals, tail lights, and marker lights

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

Practice more: California CDL Combination Vehicles Test Practice Questions - California Commercial Driver License Combination Vehicles Test Exam →