70-hour cycle, a 3 h 20 min leg, and a dispatcher's deferral
Monday, 05:00. You have had 10 hours off and come on duty at your carrier's terminal near Quebec City. You work a 70-hour/7-day cycle; your logs show 66 hours on duty in the previous 7 days. Since 05:00 you have: driven 2 h to the terminal, been on duty 1.5 h loading, driven 4 h, taken 45 min off, driven 2.5 h, and spent 1 h fuelling and doing paperwork. It is now 16:45, you are still at the fuel bay, and your log is accurate to the minute.
The next leg is a 3 h 20 min drive to a customer in Saguenay; the consignee normally takes 30 minutes to unload you. Your dispatcher radios: "Just use the deferral of daily off-duty time - that gives you two more hours, you'll be fine, take the load." You have no co-driver and no relay point on the route.
1. Calculate your remaining driving, on-duty, elapsed-window and cycle time, then determine whether the Saguenay leg is legal as planned.
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Used so far: driving 2 + 4 + 2.5 = 8.5 h. On-duty 2 + 1.5 + 4 + 2.5 + 1 = 11 h. Elapsed since 05:00 = 11 h 45 min. Cycle 66 h.
Remaining: driving 13 − 8.5 = 4.5 h. On-duty 14 − 11 = 3 h. Elapsed window 16 h − 11 h 45 = 4 h 15 min (window ends 21:00). Cycle 70 − 66 = 4 h.
The leg needs: 3 h 20 driving + 30 min unloading = 3 h 50 min of on-duty time.
Test each limit:
- Driving: 8.5 + 3.33 = 11.83 h against 13 h - OK.
- Elapsed: 11 h 45 + 3 h 50 = 15 h 35 against 16 h - OK.
- Cycle: 66 + 3.83 = 69.83 h against 70 h - OK, with about 10 minutes to spare.
- On-duty: 11 + 3.83 = 14.83 h against 14 h - over by about 50 minutes.
Conclusion: not legal. The binding constraint is the 14-hour on-duty limit, not the driving limit and not the 16-hour window. Arrival would be about 20:35, which is inside the window - that is exactly the trap: two of the three clocks look fine, so a driver who checks only driving hours talks himself into a violation.
2. Does the deferral of daily off-duty time rescue this leg? Explain precisely what it can and cannot extend.
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No - it buys nothing here.
The deferral lets a driver defer up to 2 hours of the required daily off-duty time, which extends the 16-hour elapsed window to a maximum of 18 hours, once per day, declared on the log and made up later. It is a tool for the elapsed clock.
It does not create driving time and it does not create on-duty time. The 13-hour driving limit and the 14-hour on-duty limit are unchanged, and the cycle (70 in 7) is unchanged.
In this case the elapsed clock is not the problem - 15 h 35 of a 16-hour window after the leg, comfortably inside. Extending it to 18 hours does not give back a single minute of on-duty time. What is short is on-duty: you need 3 h 50 min and you have 3 h.
Check the obvious workaround: if you drop the trailer at the customer's yard and go off duty while they unload, the 30-minute unload comes off your on-duty total. But the drive alone is 3 h 20 against the 3 h you have remaining - 11 + 3.33 = 14.33 h, still 20 minutes over the 14-hour limit. Dropping the trailer does not fix it either.
A deferral is not a bank of extra hours. Any dispatcher who describes it that way is describing a violation.
3. Given that the leg cannot be run as planned, list the legal options and say which you would take.
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Option 1 - take 8 consecutive hours off now and run the leg after the reset. This resets the daily clocks (driving, on-duty, elapsed) but not the cycle. Before moving, confirm the cycle maths: 66 + 3.83 = 69.83 h, roughly 10 minutes of margin. That means after the leg you cannot legally do any further on-duty work until the oldest day ages out of the 7-day window and frees hours. Workable, but the leg must be the last thing you do.
Option 2 - relay or hand the load to another driver who has hours available. Cleanest commercially, and it does not put your licence at risk.
Option 3 - deliver tomorrow morning after the reset, with the customer's agreement.
Option 4 - do not take the load at all and let the carrier re-plan the dispatch.
What you do not do is run it and adjust the log afterward. The times are what they are; a false entry turns a fatigue-management problem into a records offence, and the dispatcher's radio instruction is not a defence for the driver who signed the log.
I would take Option 2 or Option 1 in that order, and I would tell the dispatcher the specific number - 14.83 hours on-duty against a 14-hour limit - rather than arguing in general terms about being tired.