A DOT reset takes at least 34 consecutive hours off duty. Once you complete those 34 hours, your cumulative 60-hour or 70-hour on-duty clock drops back to zero and a new work week starts. The reset is optional, not scheduled, and the details shift depending on whether you haul freight, carry passengers, or work oilfield operations.
What the 34-Hour Restart Does
The Federal Motor Carrier Safety Administration caps your cumulative on-duty time at 60 hours over 7 consecutive days or 70 hours over 8 consecutive days, depending on how your carrier operates.1Federal Motor Carrier Safety Administration. Summary of Hours of Service Regulations When those hours run low, the restart is the mechanism that gives them back.
The rule itself is short: any 7- or 8-consecutive-day period may end with an off-duty period of 34 or more consecutive hours.2eCFR. 49 CFR 395.3 – Maximum Driving Time for Property-Carrying Vehicles After you finish that break, the cumulative clock zeros out and a new period begins.
A few points drivers miss:
- You’re never required to take a restart. If you still have hours available under the 60/70-hour cap, you can keep working. The restart is a tool, not a schedule.
- The restart resets your cumulative weekly clock. Your 11-hour driving limit and 14-hour on-duty window reset on their own through 10 consecutive hours off duty. A 34-hour break clears that too, since 34 is more than 10, but the point of the restart is the weekly total.
- The full 34 hours must be off duty and consecutive. Any on-duty activity in that window breaks the count, and you start the 34-hour clock over.
What Counts as Off Duty During the Reset
Off duty doesn’t mean parked and still. FMCSA treats “personal conveyance” as off-duty time, so limited personal driving of your commercial vehicle won’t disrupt a restart. Approved examples include commuting between your residence and a terminal, traveling from a truck stop to a restaurant, and moving to a safe rest location after unloading.3Federal Motor Carrier Safety Administration. List of Proper Use of Personal Conveyance
Personal conveyance has limits. You can’t use it to advance a load toward its destination or to stretch your driving day. Short, reasonable movements for personal needs are the idea. Time in a sleeper berth also counts as off duty, so part or all of the 34 hours can be spent there.
Passenger-Carrying Drivers
If you drive a bus or motorcoach, the 34-hour figure for resetting your 60/70-hour cumulative limit still applies.4eCFR. 49 CFR Part 395 – Hours of Service of Drivers Where the rules diverge is in the daily limits: passenger-carrying drivers operate under 49 CFR 395.5 with a 10-hour driving limit, a 15-hour on-duty window, and only 8 consecutive hours off duty needed to restart the daily clocks. The weekly restart itself works the same way.
The 24-Hour Oilfield Exception
Drivers who exclusively transport oilfield equipment or service oil and gas field operations can end any 8-consecutive-day period with 24 consecutive hours off duty instead of 34, under 49 CFR 395.1(d).5eCFR. 49 CFR 395.1 – Scope of Rules in This Part
“Exclusively” is doing real work in that sentence. The whole period must be oilfield-related. Hauling sand or water from a well site back to a service depot qualifies as field operations; moving materials between depots or from a railhead to a depot doesn’t. One non-oilfield trip during the period drops you back to the standard 34-hour restart.
How the Reset Shows Up on Your ELD
Most commercial drivers record hours of service through an Electronic Logging Device, which tracks engine hours and vehicle movement automatically. Your ELD records must show when you went off duty and when you came back on, and that’s how enforcement confirms a 34-hour restart actually happened.6Federal Motor Carrier Safety Administration. General Information about the ELD Rule
During a roadside inspection, an officer will look for a clean, uninterrupted block of at least 34 hours in off-duty status before you started driving again. Gaps, inconsistencies, or a duty-status change inside that window will invalidate the restart, which means your cumulative hours never reset in the first place.
Penalties for Skipping or Faking the Reset
Driving past your limits or falsifying logs carries serious financial exposure. Non-recordkeeping HOS violations, including exceeding driving, on-duty, or cumulative limits, run up to $19,246 per violation for carriers and up to $4,812 per violation for drivers. FMCSA treats egregious driving-time violations, meaning more than 3 hours over the driving limit, as warranting the maximum penalty allowed by law. Carriers that let drivers operate in violation of an out-of-service order face penalties up to $23,647 per violation.7eCFR. Appendix B to Part 386 – Penalty Schedule
An officer who catches you over your hours during an inspection can also place you out of service on the spot. You sit until you’ve built up enough off-duty time to drive legally again. Between the fine, the downtime, and the effect on the carrier’s safety rating, skipping the restart and cleaning up the log afterward rarely comes out ahead.