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Zorluk: OrtaHours of Service (HOS) Regulations

An interstate truck driver comes on duty at 06:00 following 10 consecutive hours of rest. During the morning, the driver spends 2 hours2\text{ hours} loading freight (on-duty, not driving) and then drives for 5 hours5\text{ hours}. At 13:00, the driver takes a mandatory 30-minute30\text{-minute} off-duty meal break, resuming duty at 13:30. Assuming no further non-driving duties or delays, what is the maximum number of additional driving hours the driver is permitted to log before reaching the regulatory limit for the shift?

  1. A
    6.5 hours6.5\text{ hours}
  2. 6 hours6\text{ hours}Cevap
  3. C
    4 hours4\text{ hours}
  4. D
    9 hours9\text{ hours}

Cevap

6 hours6\text{ hours}
Under Hours of Service (HOS) regulations, a property-carrying commercial driver may drive up to 11 hours11\text{ hours} within a 14-hour14\text{-hour} consecutive window after completing 10 consecutive hours10\text{ consecutive hours} off duty. The driver already completed 5 hours5\text{ hours} of driving, leaving 11−5=6 hours11 - 5 = 6\text{ hours} of driving available. Resuming driving at 13:30 after the required 30-minute30\text{-minute} break, 6 hours6\text{ hours} of driving completes at 19:30, which falls safely before the 14-hour14\text{-hour} window closes at 20:00.

Adım Adım Çözüm

1
Calculate remaining driving hours under the 11-hour driving rule.
The driver has 6 hours6\text{ hours} of driving capacity remaining (11 hours−5 hours=6 hours11\text{ hours} - 5\text{ hours} = 6\text{ hours}).
Property-carrying commercial drivers are limited to a maximum of 11 hours of total driving time during a shift.
2
Determine the expiration time of the 14-hour consecutive duty window.
The 14-hour window opened at 06:00 and expires at 20:00 (8:00 PM).
Drivers may not drive after the end of the 14th consecutive hour following 10 consecutive hours off duty.
3
Verify that the remaining driving time fits within the 14-hour duty window.
Resuming driving at 13:30 for 6 hours6\text{ hours} finishes at 19:30, which is before the 20:00 window closure.
Both the 11-hour driving cap and the 14-hour duty window constraint must be satisfied simultaneously.

Anahtar Kavram

Hours of Service (HOS) 11-Hour Driving Limit and 14-Hour Duty Window
Tahmini Süre:1m 15s
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