You are prohibited from operating a commercial vehicle if you've been on-duty for how many hours in a week?
- 80 hours
- 60 hours
- 50 hours
- 70 hours ✓
Answer: D. 70 hours
You are prohibited from driving after 70 hours on-duty in a seven-day period.
Why this is the answer
The handbook describes a seven-day cycle and a 14-day cycle. For the seven-day cycle, it says a driver cannot drive after being on-duty for 70 hours in seven consecutive days. It also says a driver must not keep driving after accumulating 70 on-duty hours without 24 consecutive hours off-duty. That makes 70 hours the weekly on-duty point tied to the prohibition in the question; the 14-day figure is 120 hours, which is a different cycle.
Why the other answers are wrong
- A. 80 hours — Eighty hours is beyond the seven-day on-duty ceiling; the handbook sets the stop point at 70 hours, not 80.
- B. 60 hours — Sixty hours is below the seven-day on-duty ceiling, so it is not the point at which driving is prohibited.
- C. 50 hours — Fifty hours is below the seven-day on-duty ceiling, so the handbook does not set the prohibition there.
Remember it
For weekly limits, pair seven days with seventy hours; if you're past that pair, you're past the driving limit.