Practice question

Why can an empty trailer jackknife more easily under braking?

Low tire load lets the brakes lock more easily
Empty trailers have no brakes
The fifth wheel cannot pivot when empty
ABS turns off when empty

Answer: A — Low tire load lets the brakes lock more easily

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 →