Practice question

Why avoid quick lane changes when loaded?

Rearward amplification can overturn the trailer
The fifth wheel always unlocks
The compressor stops
The CLP expires

Answer: A — Rearward amplification can overturn the trailer

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

Practice more: Iowa CDL Combination Vehicles Test Practice Questions - Iowa Commercial Driver License Combination Vehicles Test Exam →