Practice question

What must you visually confirm after a fifth wheel couples to a kingpin?

  1. After coupling, visually confirm fifth wheel jaws closed around the kingpin and the lock is engaged.
  2. check only cargo doors
  3. check only paint color
  4. skip visual checks after a tug test

Answer: A — After coupling, visually confirm fifth wheel jaws closed around the kingpin and the lock is engaged.

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

Practice more: Ohio CDL Doubles and Triples Endorsement Test Practice Questions - Ohio CDL Doubles and Triples Endorsement Test Exam →