The 34-hour restart lets you reset your weekly 60-hour or 70-hour clock back to zero by taking at least 34 consecutive hours off duty. Once those 34 straight hours are done, you start your next work week with a full set of hours again.
Every driver runs up against the weekly limit sooner or later. You have your 11-hour driving limit and your 14-hour window each day, but there is also a bigger clock hanging over the week: 60 hours in 7 days, or 70 hours in 8 days, depending on how your carrier is set up. The restart is the tool that wipes that bigger clock clean so you are not left crawling along on a few leftover hours at the end of the week. Used well, it keeps you both legal and rested. Used at the wrong moment, it quietly costs you driving time you did not need to give up. This guide walks through exactly how the restart works, when it pays off, when it does not, and the mistakes that catch even experienced drivers.
Key Takeaways
- A 34-hour restart is at least 34 consecutive hours spent off duty or in the sleeper berth, with zero on-duty work in between.
- Completing it resets your rolling 60-hour in 7 days or 70-hour in 8 days clock back to zero.
- The restart is optional. It is a tool you choose to use, not a rule you are forced to follow.
- Any on-duty task during the block, even a few minutes of fueling or paperwork, breaks the restart and forces you to start the 34 hours over.
- A restart is often free when you were going to be parked anyway, but wasteful when you still have plenty of weekly hours banked.
- Hours of service rules change over time, so always confirm the current version with FMCSA or your carrier before relying on it.
What the 60/70 clock actually is
Before the restart makes sense, you have to understand what it is resetting. The 60/70 rule is a rolling limit on how much on-duty time you can rack up over a stretch of days. It sits above your daily limits, and it is the reason a driver can be perfectly fine on the 11-hour and 14-hour clocks yet still be forced to park.
- If your carrier does not run every day of the week, you are usually on the 60 hours in 7 days rule.
- If your carrier runs 7 days a week, you are usually on the 70 hours in 8 days rule.
The word “rolling” is the key. Each day, the on-duty hours you worked 7 or 8 days ago fall off the back of the count and become available again. This is what drivers call the recap. Without a restart, that slow drip of hours coming back is all you get, and it can leave you rationing miles at the end of a hard stretch.
A quick recap example
Say you are on the 70-hour in 8-day schedule and you log the following on-duty totals over eight days. The rolling total is what matters, because your available hours for the next day equal 70 minus that total.
| Day | On-duty hours logged | Running 8-day total | Hours available next day |
|---|---|---|---|
| Day 1 | 11 | 11 | 59 |
| Day 2 | 12 | 23 | 47 |
| Day 3 | 10 | 33 | 37 |
| Day 4 | 13 | 46 | 24 |
| Day 5 | 11 | 57 | 13 |
| Day 6 | 9 | 66 | 4 |
| Day 7 | 4 | 70 | 0 |
By Day 7 in this example you are tapped out at 70 hours and cannot drive until either the oldest day rolls off the back or you take a restart. On Day 9, the 11 hours from Day 1 would fall off and hand you 11 hours back, but you would still be stuck rationing. That drip is exactly what the restart skips.
How the restart resets everything
The 34-hour restart skips the slow recap and hands you a clean slate all at once. Here is the whole thing in plain terms.
You go off duty. You stay off duty, or in the sleeper berth, for at least 34 hours in a row. When you are done, your 7 or 8 day count goes back to zero, and you have your full 60 or 70 hours to work with again.
That is it. No paperwork trick, no special permission. Just 34 straight hours with no on-duty work in the middle. Compare that to the recap table above: instead of clawing back 11 hours here and 12 hours there over the following days, you walk away from the restart with the entire bank refilled in one stop.
The word “consecutive” is everything
The 34 hours must be back to back with nothing on-duty breaking them up. If you pump fuel for the truck, sign for a load, or do a pre-trip inspection in the middle of your break, the clock on your restart snaps back to zero and you have to begin the 34 hours over again. Sleeping, eating, and running personal errands are all fine because they count as off duty. Turning a wrench on the truck for pay or doing load paperwork is not.
This is where a lot of restarts quietly fail. A driver parks Friday night, then Saturday afternoon decides to top off the fuel tank or do a quick load check to get a head start on Sunday. That single on-duty entry, even ten minutes of it, ends the restart. The 34-hour count resets to zero from that moment, and now the driver who thought they would be legal Sunday morning is not.
A simple example
Say you run hard Monday through Friday and burn up almost your whole 70 hours by Friday evening. Here is how a restart plays out.
| Time | What you are doing | Clock status |
|---|---|---|
| Friday 6:00 PM | Drop the trailer, go off duty | Nearly out of hours |
| Friday 6:00 PM to Sunday 4:00 AM | 34 hours off duty, no work at all | Restart running |
| Sunday 4:00 AM | 34 hours complete | Clock reset to zero |
| Sunday 4:00 AM and after | Ready to roll | Full 70 hours available |
Because you parked Friday evening and did not touch any on-duty work, by early Sunday you have a full week of hours again and a rested body to go with it. Notice the math on the timing: 6:00 PM Friday plus 34 hours lands at 4:00 AM Sunday. If you had gone off duty at 8:00 PM instead, your restart would not be complete until 6:00 AM Sunday. Two hours later on the front end means two hours later on the back end, so the start time is worth logging carefully.
When a restart makes sense, and when it does not
The restart is optional, so the real question is whether it helps you or costs you.
| Situation | Restart or recap? |
|---|---|
| You burned most of your weekly hours by Thursday or Friday | Restart is often worth it |
| You are home for the weekend anyway | Restart happens naturally, so use it |
| You still have plenty of weekly hours left | Recap may serve you better, no need to stop |
| You run steady miles every single day | Watch the math, a restart can waste time |
Here is the thing many newer drivers miss. A restart takes real hours off the road. If you only had a handful of hours coming back on recap, and you were going to be parked anyway, the restart is basically free. But if you stop for 34 hours when you still had good hours banked, you just gave away driving time you could have used.
Working the numbers both ways
Picture two drivers, both on the 70-hour in 8-day schedule, both with 6 hours left on their weekly clock Friday evening.
Driver A is heading home for the weekend and would be parked from Friday night until Monday morning no matter what. For Driver A, the restart costs nothing extra. The truck was not going to move anyway, so trading a weekend of idle time for a full 70 hours Monday is pure upside.
Driver B is a team or a hard-running solo who could realistically turn miles all weekend. If Driver B stops for a restart, they give up whatever driving those 34 hours could have produced. At a typical highway pace, even a conservative estimate of drivable hours over that window represents several hundred miles of freight left on the table. For Driver B, riding the recap and letting old hours roll back may keep the truck earning while still staying legal.
Same rule, opposite decision, and the difference is entirely about whether the 34 hours were going to be idle time anyway. Running the numbers before you decide is smart, and a tool like our Hours of Service Calculator can help you see where your clock stands and what recap would give you.
Common mistakes to avoid
Even veteran drivers trip over the restart now and then. Keep these in mind.
- Doing on-duty work in the middle. Fueling, a load check, a pre-trip, or load paperwork resets your 34 hours. Keep the whole block clean from the first minute to the last.
- Miscounting the start time. Your restart begins when you actually go off duty on your logs, not when you think you clocked out. An hour of sloppy logging on the front end pushes your legal-to-drive time an hour later.
- Confusing personal conveyance with on-duty driving. Personal conveyance logs as off duty and is fine during a restart if your carrier allows it. Moving the truck to advance the load is on-duty driving and breaks the block.
- Forgetting your carrier policy. Some companies layer their own rules on top of the federal ones, such as limits on how often you can restart. Ask your safety department if you are unsure.
- Assuming the rule never changes. Hours of service rules have been adjusted over the years. What was true a few years back, including the old two-night and once-per-week conditions, may not be true today.
- Restarting out of habit. Stopping for 34 hours every single weekend without checking your recap can quietly cost you miles when you still had usable hours banked.
How to take a restart, step by step
If you have decided a restart is the right call, the process itself is simple. The discipline is in keeping the block clean.
- Check your clock first. Look at how many weekly hours you have used and how many recap would return over the next few days. Decide whether a restart actually helps.
- Go off duty and note the exact time. Switch your ELD to off duty or sleeper berth and record the precise minute, because that minute sets when you are legal to drive again.
- Stay off duty for a full 34 hours. Sleep, eat, see family, run personal errands. Do none of it for the truck or the load.
- Do not break the block. No fueling, no inspection, no paperwork, no moving the trailer. If something must be done, do it before you start or after you finish.
- Confirm the reset. After 34 consecutive hours, your ELD should show the weekly clock back at zero. Check the display before you dispatch.
- Roll with a full bank. You have your complete 60 or 70 hours again. Plan the week accordingly.
A word on staying legal
Hours of service rules come from the Federal Motor Carrier Safety Administration, the FMCSA, and they do get updated from time to time. The 34-hour restart has looked a little different in past years, with extra conditions added and later removed, such as requirements for two overnight rest periods and a limit of one restart per week. Those conditions are not part of the current plain 34-hour rule, but the fact that they came and went is exactly why you should not lean on an old memory.
Check the official FMCSA hours of service pages at fmcsa.dot.gov, or ask your carrier’s safety office, when you have a question about your specific situation. Rules can also differ for certain short-haul, agricultural, or specialized operations, so your exact situation may carry exceptions this general guide does not cover. This article is here to explain how the restart generally works, not to give you legal advice on your logs.
The bottom line
The 34-hour restart is one of the simplest, most useful tools in your logbook. Take 34 hours in a row off duty, keep it clean with no on-duty work, and your weekly 60 or 70 hour clock starts fresh. Used at the right time, it keeps you legal and keeps you rested. Used at the wrong time, it just burns hours you did not need to give up.
When you are planning a week, run your numbers first. Our Hours of Service Calculator helps you track where your clock stands and whether a restart beats riding the recap, and if you are crossing state lines, the IFTA Fuel Tax Calculator keeps your fuel tax straight while you are at it. A little planning up front saves you a lot of trouble down the road.