FMCSA Hours of Service Calculator — 11/14 Hour Rules
Track your available driving hours under FMCSA regulations. Calculate remaining drive time, duty window, and 60/70-hour weekly limits.
Quick answer: Max 11 hours driving after 10 hours off. 14-hour duty window from start. 30-min break after 8 hours driving. 60/70-hour weekly limit reset with 34 consecutive hours off.
📋 HOS Compliance Check
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Total on-duty hours this cycle
FMCSA HOS Rules Summary
| Rule | Limit | Penalty |
|---|---|---|
| 11-Hour Driving | Max 11 hrs after 10 hrs off | Up to $16,000 + 7 CSA pts |
| 14-Hour Window | 14 consecutive hrs from start | Up to $16,000 + 7 CSA pts |
| 30-Min Break | After 8 hrs driving | $1,000-$11,000 + 5 CSA pts |
| 60/70-Hour Limit | 60hrs/7 days or 70hrs/8 days | Up to $16,000 + 7 CSA pts |
| 34-Hour Restart | 34 consecutive hrs off duty | Resets weekly clock |
| Sleeper Berth Split | 8+2 or 7+3 hour split | Allows duty period splits |
FAQ
No. The 14-hour window is consecutive from your first on-duty moment. Off-duty breaks do NOT pause or extend it — except for sleeper berth split provisions (8+2 or 7+3).
Drivers may extend both the 11-hour and 14-hour limits by up to 2 hours when encountering unexpected adverse conditions (snow, fog, accidents). This exception cannot be used for routine weather.