Practice question

For a South Carolina CDL combination vehicle, when you connect a glad-hand to the trailer, you should:

  1. Push it in and quarter-turn to lock the lugs together
  2. Use sealant on the threads
  3. Connect them while air pressure is at full system level
  4. Connect only the service line first, then drive 30 seconds before connecting emergency

Answer: A — Push it in and quarter-turn to lock the lugs together

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Practice more: SC CDL Combination Vehicles Practice Questions - South Carolina CDL Combination Vehicles Test Exam →