Practice question

Multi-speed axles and auxiliary transmissions are used:

  1. To make a vehicle run more smoothly.
  2. To provide extra gears.
  3. To get improved gas mileage.
  4. To make a vehicle less noisy.

Answer: B — To provide extra gears.

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

Practice more: Pennsylvania CDL HazMat Test 2 →