34-Hour Restart Calculator
Find exactly when your 34-hour restart ends and your full 60 or 70 hours come back.
Not covered: passenger-carrying, short-haul exceptions, personal conveyance, team-driver passenger-seat time, Canadian and intrastate rules.
Date and time you went off duty or into the sleeper berth to begin your 34-hour restart
Enter how many consecutive off-duty hours you have already completed (0 to 34)
Restart Completion
FMCSA 49 CFR 395.3(c) 34-hour restart rule
Planning aid for US property-carrying drivers under FMCSA rules. Your ELD record and the regulations are what count. Not legal advice.
Quick answer
A 34-hour restart is 34 or more consecutive hours off duty. When it ends, a new 7- or 8-day period starts and the full 60 or 70 hours are available again (395.3(c)). Start at 6:00 PM on Monday and the restart is complete at 4:00 AM on Wednesday.
How it's calculated
• Restart duration: Any period of 34 or more consecutive hours off duty and/or sleeper berth time satisfies the restart requirement under 49 CFR 395.3(c).
• Completion time: The restart ends at exactly start + 34 hours.
• Remaining rest: Calculated as 34 hours − hours already completed.
• Clock reset: Once the 34 consecutive hours are completed, all accumulated on-duty hours in the prior 7 or 8 consecutive days are zeroed out, restoring the full 60 or 70 hours.
Sources
- 49 CFR 395.3 — Maximum driving time for property-carrying vehicles (Cornell LII)
10/11/14 hours, 30-minute break, 60/70, 34-hour restart
- FMCSA — Summary of Hours of Service Regulations (updated 28 Mar 2022)
Official summary of hours of service regulations
- FMCSA — HOS Examples (PDF, 28 Apr 2022)
Example 14 test vector; Examples 6–8 (restart), 29 (70-hour)
Last reviewed: 2026-10-26
Built and maintained by Numberwright. The rules engine follows 49 CFR Part 395 and reproduces FMCSA's published Example 14. Found a mistake? Contact details coming soon.
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