A long-haul freight driver reports for duty at 05:30 following a qualifying 10-consecutive… — Commercial Driver's License (CDL) General Knowledge Exam

A long-haul freight driver reports for duty at 05:30 following a qualifying 10-consecutive-hour off-duty rest period. The driver logs the following sequential activities during the shift:

- 05:30 to 06:45: Pre-trip vehicle inspection and freight paperwork ( $1.25\text{ hours}$ on-duty not driving)
- 06:45 to 11:15: Highway driving ( $4.5\text{ hours}$ driving)
- 11:15 to 12:00: Meal and rest break ( $0.75\text{ hours}$ off-duty)
- 12:00 to 15:30: Highway driving ( $3.5\text{ hours}$ driving)
- 15:30 to 16:30: Dockside cargo unloading ( $1\text{ hour}$ on-duty not driving)

According to standard Hours of Service regulations for property-carrying vehicles, how many hours remain in the driver's 14-consecutive-hour duty window at 16:30?

Answer: 3 hours

Answer

3 hours remain in the 14-consecutive-hour duty window.

The 14-hour rule provides a consecutive 14-hour period from the start of the duty day (05:30) within which all driving must be completed. Since 11 hours of total clock time have elapsed by 16:30 (

05:30

16:30

), exactly 3 hours (

14 - 11 = 3

) remain until the window closes at 19:30.

Step-by-Step Solution

Determine the expiration time of the 14-consecutive-hour duty window.

The 14-hour window begins at 05:30 and concludes exactly at 19:30.

Under property-carrying regulations, the 14-hour clock runs continuously without pause from the moment duty begins.

Calculate the total elapsed time between the start of the shift and the current status check at 16:30.

Elapsed time =

1.25 + 4.5 + 0.75 + 3.5 + 1.0 = 11.0\text{ hours}

(from 05:30 to 16:30).

All off-duty breaks and on-duty activities count toward the continuous 14-hour running window.

Compute remaining window time.

14.0\text{ hours} - 11.0\text{ hours} = 3.0\text{ hours}

(or

19:30 - 16:30 = 3.0\text{ hours}

Subtracting the accumulated clock time from the maximum allowable 14-hour window yields the remaining available window.

Key Concept

The 14-hour duty window for property-carrying commercial drivers is a consecutive running clock that starts upon coming on duty and cannot be paused by ordinary off-duty breaks or meal stops.

Estimated Time:1m 15s

Question

Answer

Step-by-Step Solution

Key Concept

Common Mistakes

Topics

More questions from this topic