What is the 14-hour rule in trucking?

You may not drive beyond the 14th consecutive hour after coming on duty, following 10 consecutive hours off duty. Off-duty time and breaks do NOT extend the 14-hour window (except a qualifying sleeper-berth split). The window is elapsed clock time, not just driving time.

How does the 34-hour restart work?

Taking 34 or more consecutive hours off duty resets your 60-hour or 70-hour clock back to zero, starting a fresh weekly cycle. The 34-hour restart does not affect the daily 11-hour or 14-hour limits.

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Hours of Service (HOS) Calculator

Q: What is the 11-hour driving limit?

A property-carrying driver may drive a maximum of 11 hours after 10 consecutive hours off duty. Once you hit 11 hours of driving, you cannot drive again until you take another 10 consecutive hours off duty.

Q: When is the 30-minute break required?

A 30-minute break is required after 8 cumulative hours of driving time without a 30-minute interruption. The break can be satisfied by any 30 consecutive minutes not driving — off duty, sleeper berth, or on duty not driving.

Q: What is the 60/70-hour rule?

You may not drive after 60 hours on duty in 7 consecutive days, or 70 hours on duty in 8 consecutive days. Carriers that do not operate every day of the week use the 60/7 schedule; carriers operating every day use 70/8.

See how many driving hours you have left under DOT Hours of Service rules. Covers the 11-hour, 14-hour, 30-minute break, and 60/70-hour limits for property-carrying CDL drivers.

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Quick Answer

Property-carrying drivers may drive up to 11 hours after 10 consecutive hours off duty, but not beyond the 14th consecutive hour after coming on duty. A 30-minute break is required after 8 hours of driving, and you cannot drive after 60 hours on duty in 7 days or 70 hours in 8 days. A 34-hour restart resets the weekly clock.

Key Takeaways

11-hour limit: max 11 hours of driving after 10 consecutive hours off duty.
14-hour window: no driving beyond the 14th hour after coming on duty; breaks do not extend it.
30-minute break: required after 8 cumulative hours of driving, satisfied by any 30 minutes not driving.
60/70-hour limit: max 60 on-duty hours in 7 days or 70 in 8 days, depending on your carrier's schedule.
34-hour restart: 34+ consecutive hours off duty resets the 60/70-hour weekly clock to zero.
Your ELD is the official record — this calculator is a planning estimate and does not model sleeper-berth splits or exceptions.

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Free Hours of Service Calculator

Planning estimate only — not your official record.

Your ELD (electronic logging device) is the legal record of duty status. This tool estimates your remaining hours under the standard property-carrying rules and does not model sleeper-berth splits, adverse-driving conditions, short-haul, or other exceptions. Always confirm against your ELD or logbook before driving.

Your Status Today

Time you came on duty today

Starts your 14-hour driving window

Weekly limit (60/70-hour rule)

Use 60/7 if your carrier does not operate every day of the week

Hours driven so far today

Driving time only (max 11)

Total on-duty hours today

Driving + non-driving on-duty

On-duty hours in last 8 days

Toward your 70-hour limit

I've already taken my 30-minute break
A 30-minute non-driving break is required after 8 cumulative hours of driving time.

Your Remaining Hours

Driving Hours Remaining

11.00 hrs

Binding limit: 11-hour driving limit

11-Hour Driving

11.00 hrs

left to drive

14-Hour Window

8:00 PM

no driving allowed after this time

70-Hour Weekly

70.00 hrs

on-duty left this cycle

30-minute break due in 8.00 hours of driving

A 30-minute break is required once you hit 8 cumulative hours of driving time.

34-hour restart

Taking 34 or more consecutive hours off duty resets your 70-hour clock back to zero, giving you a fresh weekly cycle. It does not reset the daily 11-hour or 14-hour limits — those reset after 10 consecutive hours off duty.

How Hours of Service Rules Work

The federal Hours of Service (HOS) rules in 49 CFR Part 395 limit how long property-carrying commercial drivers can drive and work. They exist to reduce fatigue-related crashes. Four limits run at the same time — you are legal only when you are within all of them. Here is what each one means.

The 11-hour driving limit

After 10 consecutive hours off duty, you may drive a maximum of 11 hours. Once you accumulate 11 hours of driving, you must take another 10 consecutive hours off duty before driving again. Non-driving work does not count against this limit — only driving time does.

The 14-hour window

You may not drive beyond the 14th consecutive hour after coming on duty. This is an elapsed-time window: it runs on the clock, so meal stops, fueling, loading delays, and off-duty breaks all burn window time without pausing it. The one exception is a qualifying sleeper-berth split. When the 14th hour arrives you must stop driving even if you have driving hours left on your 11-hour limit.

The 30-minute break

After 8 cumulative hours of driving time without at least a 30-minute interruption, you must take a 30-minute break before driving again. The break can be off duty, in the sleeper berth, or on duty not driving — any status other than driving qualifies, as long as it is at least 30 consecutive minutes.

The 60/70-hour limit and 34-hour restart

You cannot drive after being on duty 60 hours in 7 consecutive days or 70 hours in 8 consecutive days. Carriers that do not operate every day of the week use the 60/7 schedule; those operating every day use 70/8. This is a rolling limit — each day the oldest day drops off. Taking 34 or more consecutive hours off duty resets the 60- or 70-hour clock to zero, starting a fresh weekly cycle without waiting for days to roll off.

FAQ

What is the 11-hour driving limit?▼

You may drive a maximum of 11 hours after 10 consecutive hours off duty. Once you hit 11 hours of driving, you cannot drive again until you take another 10 consecutive hours off duty.

Do breaks extend the 14-hour window?▼

No. The 14-hour window runs on elapsed clock time from when you came on duty. Meals, fueling, and off-duty breaks do not extend it — the only exception is a qualifying sleeper-berth split, which this calculator does not model.

When is the 30-minute break required?▼

After 8 cumulative hours of driving time without a 30-minute interruption. Any 30 consecutive minutes not driving (off duty, sleeper, or on duty not driving) satisfies it.

Should I use the 60/7 or 70/8 limit?▼

Use 60 hours in 7 days if your carrier does not operate commercial motor vehicles every day of the week. Use 70 hours in 8 days if your carrier operates every day. Ask your carrier which cycle applies to you.

Is this calculator a substitute for my ELD?▼

No. Your ELD is the official record of duty status and the source of truth for enforcement. This tool is a planning estimate only and does not model sleeper-berth splits, adverse-driving conditions, short-haul, or other exceptions.

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