Practice question

The “crack-the-whip” effect is mainly caused by:

Rearward amplification after quick steering
Too much fifth-wheel grease
Low engine coolant
A trailer door left open

Answer: A — Rearward amplification after quick steering

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

Practice more: OR CDL Combination Practice Questions - Oregon CDL Combination Vehicles Test Exam →