Practice question

A driver is reviewing kingpin. What should they remember?

  1. The kingpin raises the landing gear
  2. The kingpin is the blue service line
  3. The kingpin powers trailer lights
  4. The kingpin must be captured by locked fifth wheel jaws

Answer: D — The kingpin must be captured by locked fifth wheel jaws

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

Practice more: Arkansas CDL Combination Vehicles Test Practice Questions - Arkansas Commercial Driver License (CDL) Combination Vehicles Knowledge Test Exam →