Hours of Service Calculator
Enter your duty status log and see how much driving time, 14-hour window and cycle you have left under the FMCSA rules for property-carrying drivers, including sleeper berth splits and the 34-hour restart.
Duty status log
Start with your last 10-hour break and add each status change up to now.
- hminDay 1 20:00 – Day 2 06:00
- hminDay 2 06:00 – Day 2 06:30
- hminDay 2 06:30 – Day 2 11:30
- hminDay 2 11:30 – Day 2 12:00
- hminDay 2 12:00 – Day 2 15:00
Cycle and exceptions
Cycle
On-duty hours before Day 1
Hours left right now
Now: Day 2, 15:00
Drive up to 3h 00m more. Stop driving by Day 2, 18:00: 11-hour driving limit.
A 10-hour break gives you a full 11 and 14 hours again at Day 3, 01:00.
FMCSA hours of service rules for truck drivers
The limits for property-carrying commercial motor vehicle drivers in interstate commerce, from 49 CFR part 395 as last amended by the 2020 hours of service rule.
| Rule | Limit | How it works | 49 CFR |
|---|---|---|---|
| Off duty before driving | 10 h | Consecutive off duty, sleeper berth, or a combination of both, before a new shift | 395.3(a)(1), 395.1(g)(1) |
| Driving limit | 11 h | Total driving within the 14-hour window | 395.3(a)(3)(i) |
| 14-hour window | 14 h | No driving after the 14th consecutive hour after coming on duty. Off-duty breaks do not stop the clock | 395.3(a)(2) |
| 30-minute break | 8 h driving | After 8 hours of driving, a 30-minute interruption: off duty, sleeper berth, on duty not driving, or a mix | 395.3(a)(3)(ii) |
| 60/70-hour limit | 60 h / 7 days, 70 h / 8 days | All on-duty time, rolling. 70/8 if the carrier operates every day | 395.3(b) |
| 34-hour restart | 34 h off | A new 7/8-day period may start after 34 or more consecutive hours off duty | 395.3(c) |
| Sleeper berth split | 7/3, 8/2 … | Two rests of at least 2 hours, one at least 7 hours in the sleeper berth, 10 hours in total. Neither counts in the 14-hour window | 395.1(g)(1)(ii)–(iii) |
| Adverse driving conditions | +2 h | Up to 2 more hours of driving and window when unforeseen conditions stop you finishing the run | 395.1(b)(1) |
| Short-haul exception | 150 air-miles | Return and release within 14 hours: no logs or ELD and no 30-minute break; 11 hours and 60/70 still apply | 395.1(e)(1) |
| 16-hour exception | 16 h | Once per 7/8 days (or after a 34-hour restart), for drivers released at their normal work location on the last 5 duty tours | 395.1(o) |
How the 7/3 and 8/2 sleeper berth split works
Instead of one 10-hour break, a property-carrying driver can take two rest periods: one of at least 7 consecutive hours in the sleeper berth and one of at least 2 hours off duty or in the sleeper berth, adding up to at least 10 hours. The periods can come in either order, so 7/3, 3/7, 8/2 and 7.5/2.5 all work, while 6/4 and 5/5 do not.
Once the second period ends, your 11 and 14 hours are recalculated from the end of the first period, and neither qualifying period counts in the 14-hour window. Example: after a 10-hour break you drive 8 hours, rest 8 hours in the sleeper berth, drive 3 hours, then take 2 hours off duty. From the end of the sleeper period you have used 3 hours of driving and 3 hours of window, so 8 hours of driving and 11 hours of window are left.
FMCSA is testing other splits, such as 6/4 and 5/5, and a pause of the 14-hour window, in pilot programs limited to enrolled drivers. They are not general rules, and this calculator does not apply them.
The 34-hour restart and the 70-hour rule
The 60/70-hour limit counts all on-duty time, driving and on duty not driving, in a rolling 7 or 8 days. Each midnight the oldest day drops out and its hours come back. A 34-hour restart resets the count to zero at once: any 7 or 8-day period may end when you begin 34 or more consecutive hours off duty.
The current rule has no 1 a.m. to 5 a.m. requirement and no once-a-week limit on restarts. The calculator shows the earliest time your restart can end if you stay off duty from now.
Hours of service: frequently asked questions
What is the 11-hour driving rule?
A property-carrying driver may drive a total of 11 hours within the 14-hour window that starts when they come on duty after 10 consecutive hours off duty (49 CFR 395.3(a)(3)(i)). Only time at the driving controls counts; loading, fueling and waiting count toward the 14 hours and the 60/70-hour limit, not toward the 11.
How does the 14-hour rule work?
You may not drive after the 14th consecutive hour after coming on duty following 10 hours off (395.3(a)(2)). It is wall-clock time: lunch breaks and other off-duty time do not stop it. Only the rest periods of a qualifying sleeper berth split are left out. You may still do on-duty work after hour 14, but no driving.
What is the 30-minute break rule?
You may not drive once 8 hours of driving have passed without a break of at least 30 consecutive minutes (395.3(a)(3)(ii)). It counts driving time, not time on duty. Since 2020 the break can be off duty, sleeper berth, on duty not driving (such as fueling), or a mix. Short-haul drivers under 395.1(e) are exempt.
What is the 70-hour rule?
You may not drive after 70 hours on duty in any 8 consecutive days if your carrier operates every day of the week, or after 60 hours in any 7 consecutive days if it does not (395.3(b)). All on-duty time counts, not only driving. The window rolls: each day the oldest day drops out and its hours come back.
How does the 34-hour restart work?
Any 7 or 8-day period may end with the beginning of an off-duty period of 34 or more consecutive hours (395.3(c)), so after 34 hours off your 60/70-hour count starts again at zero. The current rule has no 1 a.m. to 5 a.m. requirement and no limit of one restart per week.
How does the 7/3 sleeper berth split work?
You can replace the 10-hour break with two rest periods: at least 7 consecutive hours in the sleeper berth and at least 2 hours off duty or in the sleeper berth, 10 hours or more in total, in either order (395.1(g)(1)(ii)). After the second period, your 11 and 14 hours are recalculated from the end of the first, and neither period counts in the 14-hour window.
What is the adverse driving conditions exception?
If snow, ice, fog or unusual road or traffic conditions that you could not have known about stop you from finishing the run safely, you may drive up to 2 more hours beyond the limits: 13 hours of driving within a 16-hour window (395.1(b)(1)). It does not extend the 60/70-hour limit.
Who qualifies for the short-haul exception?
Drivers who stay within 150 air-miles of their normal work reporting location, return there and are released within 14 consecutive hours, and have at least 10 hours off between shifts (395.1(e)(1)). They need no record of duty status or ELD and no 30-minute break, but the 11-hour and 60/70-hour limits still apply, and the carrier keeps time records for 6 months.