A property-carrying commercial motor vehicle (CMV) driver begins their shift at 03:00 after completing a 10-consecutive-hour off-duty period. The driver's daily logbook records the following activities:
- 03:00 to 04:30: On-duty, not driving
- 04:30 to 09:30: Driving
- 09:30 to 10:30: Off-duty
- 10:30 to 15:00: Driving
At exactly 15:00, the driver encounters an unforecasted severe ice storm that qualifies for the FMCSA Adverse Driving Conditions exception. The driver decides to proceed to the nearest safe haven.
Assuming the driver takes no further off-duty breaks, what is the MAXIMUM amount of additional driving time the driver can legally accumulate, and at what specific time MUST the driver stop driving?
- A4.0 hours of additional driving time; must stop at 19:00
- 3.5 hours of additional driving time; must stop at 18:30Cevap
- C2.0 hours of additional driving time; must stop at 17:00
- D1.5 hours of additional driving time; must stop at 16:30
Cevap
3.5 hours of additional driving time; must stop at 18:30
By 15:00, the driver has accumulated 9.5 hours of driving time and 12 hours of total elapsed time against their daily window. Under the FMCSA Adverse Driving Conditions exception, the standard 11-hour driving limit is extended to 13 hours, and the 14-hour driving window is extended to 16 hours. Subtracting the 9.5 hours already driven from the 13-hour extended limit leaves exactly 3.5 hours of available driving time. Subtracting the 12 elapsed hours from the 16-hour extended window leaves 4.0 hours of available window time. Because the driver is bound by whichever limit is reached first, the 3.5-hour driving limit restricts them. Adding 3.5 hours to 15:00 means they must stop driving at 18:30.
Adım Adım Çözüm
Anahtar Kavram
Adverse Driving Conditions Exception (Simultaneous 11-hour and 14-hour rule extensions)
Tahmini Süre:2m 30s