Practice question
On the Ohio CDL Combination Vehicles test, when climbing a steep grade with a heavy combination vehicle, the best practice is to:
- Maintain top gear as long as possible
- Downshift early before losing speed so the engine stays in its power band
- Use the trailer hand valve to assist
- Push the trailer air supply knob in and out repeatedly
Answer: B — Downshift early before losing speed so the engine stays in its power band
The correct answer is shown above. Try the full quiz for additional practice.
Practice more: Ohio CDL Combination Practice Questions - Ohio CDL Combination Vehicles Test Exam →