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Zorluk: ZorHours of Service (HOS) Regulations

A property-carrying driver logs on duty at 05:00 after completing a 10-consecutive-hour rest period. The driver's duty log for the day records the following sequence of events:

- 05:00 – 06:00: On-duty (not driving) performing vehicle inspection and paperwork
- 06:00 – 11:30: Driving
- 11:30 – 12:15: Off-duty meal break
- 12:15 – 14:15: On-duty (not driving) supervising freight unloading
- 14:15: Resumes driving

Assuming no adverse driving conditions or sleeper-berth provisions are utilized, what is the latest time the driver is legally permitted to drive a commercial motor vehicle during this duty period?

  1. A
    16:00
  2. 19:00Cevap
  3. C
    19:45
  4. D
    20:30

Cevap

19:00
Under FMCSA Hours of Service regulations for property-carrying vehicles, a commercial driver may drive a maximum of 11 hours after 10 consecutive hours off duty, but cannot drive after the 14th consecutive hour coming on duty. The 14-hour window began at 05:00 and expires strictly at 19:00 (05:00+14 hours=19:0005:00 + 14\text{ hours} = 19:00). Standard off-duty periods (such as the 45-minute lunch) and on-duty non-driving periods do not pause or extend this 14-hour clock. Even though the driver has only used 5.5 hours of driving time (with 5.5 hours remaining under the 11-hour rule), all driving must terminate at 19:00 because the 14-hour window closes at that time.

Adım Adım Çözüm

1
Calculate the end of the 14-consecutive-hour driving window
19:00 (05:00+14 hours=19:0005:00 + 14\text{ hours} = 19:00)
Under Federal Motor Carrier Safety Administration (FMCSA) regulations, a property-carrying driver may not drive after the 14th consecutive hour after coming on duty following 10 consecutive hours off duty.
2
Calculate accumulated and remaining driving time under the 11-hour driving rule
5.5 hours driven (06:00 to 11:3006:00\text{ to }11:30), leaving 5.5 hours of available driving time (11.0−5.5=5.5 hours11.0 - 5.5 = 5.5\text{ hours})
Property-carrying drivers are allowed a maximum of 11 hours of driving within the 14-hour window.
3
Evaluate the limiting constraint at resumption of driving at 14:15
Available time before the 14-hour window closes is 4 hours and 45 minutes (19:00 cutoff)
Although the driver has 5.5 hours remaining under the 11-hour limit, the 14-hour window cannot be extended by standard off-duty meal breaks or on-duty non-driving tasks. Therefore, driving must stop at 19:00.

Anahtar Kavram

14-Hour Consecutive Duty Window versus 11-Hour Driving Limit
Tahmini Süre:2m 0s
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Konular

Hours of Service (HOS) Regulations

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