Tool
HOS reset calculator
Enter your off-duty start time and current cycle hours to find when your 10-hour daily restart and 34-hour weekly restart complete — and whether the 34-hour reset recaptures enough hours to be worth waiting for.
Your situation
Off-duty start
Enter the exact date and time you went off duty or into the sleeper berth.
Cycle hours
This is your total on-duty + driving hours over the past 8 days before your current off-duty period. Your ELD cycle summary shows this.
Reset type
Reset times
How HOS resets work
The 10-hour reset restores your daily 11-hour driving limit and 14-hour on-duty window. To use it, you must take at least 10 consecutive hours off duty or in the sleeper berth. After the 10-hour rest, you can drive again for up to 11 hours within a fresh 14-hour window — but your 70-hour cycle total continues accumulating.
The 34-hour restart resets your 70-hour (8-day) cycle clock to zero, giving you a full 70 hours of on-duty time going forward. It requires at least 34 consecutive hours off duty. Many carriers use the 34-hour restart when a driver is close to their 70-hour limit and needs the full weekly allowance back to run a profitable week.
When is the 34-hour restart worth waiting for?
The extra wait beyond a 10-hour reset only makes sense if the additional time recaptures significantly more cycle hours than you have remaining. If you have 8 hours left in your cycle and a 34-hour reset gives you 70 hours, the reset recaptures 62 hours — potentially worth 3 to 5 additional loads. If you only have 50 hours left in your cycle, the reset only returns 20 additional hours, which may not be worth 24 extra hours of downtime.
Important limitations
This calculator covers the standard 70-hour/8-day property-carrying cycle. Passenger-carrying drivers operate under a 60-hour/7-day or 70-hour/8-day cycle with different rules. The 34-hour restart provisions have had regulatory changes over time — always verify current FMCSA rules. This tool does not account for the split sleeper berth provision, the short-haul exemption, or adverse driving conditions exemptions.