Federal Hours-of-Service Rules Set the Daily Limit
A commercial driver with a CDL can drive a maximum of 11 hours in a single day, but only after ten consecutive hours off duty. This is the federal rule enforced by the Federal Motor Carrier Safety Administration (FMCSA), and it applies to most drivers hauling cargo or passengers for pay across state lines.
The 11-hour window does not mean you can drive all 11 hours straight. You must take a 30-minute break after your first 8 hours of driving. If you do not take that break, you cannot continue driving that day. The break can be off-duty time, sleeper berth time, or a combination — it just has to be 30 minutes without driving.
These rules exist because fatigue causes crashes. The FMCSA tracks violations through logbooks (now electronic in most cases) and roadside inspections. A violation can result in fines for you and your employer, out-of-service orders, and a mark on your safety record.
Key Takeaways
- You can drive 11 hours per day, but only after 10 consecutive hours off duty, and you must take a 30-minute break after 8 hours of driving.
- Your driving day resets after you complete 10 consecutive hours off duty, which includes sleeper berth time.
- Intrastate drivers (hauling within one state) may have different rules depending on the state — check your state's transportation department.
- Electronic logging devices (ELDs) record your driving and off-duty time automatically, and falsifying logs is a federal violation.
- Violations can result in fines, out-of-service orders, and damage to your safety record with the FMCSA.
The 10-Hour Off-Duty Reset and Sleeper Berth Options
Your 11-hour driving window begins only after you have been off duty for 10 consecutive hours. Off-duty time means you are not driving, on-call, or performing other safety-sensitive work. Sleeper berth time counts toward this requirement.
If you use a sleeper berth (a bunk in your truck), you can split your off-duty time. For example, you could take 8 hours in the sleeper berth and 2 hours off duty at a truck stop, and that counts as your full 10-hour reset. Some drivers use this to maximize their driving time across a longer calendar day, though the 11-hour driving limit still applies once you start.
Once you have completed 10 consecutive hours off duty, your clock resets. You can then drive up to 11 hours before you must take another 10-hour break. This cycle repeats throughout your career.
The 30-Minute Break Requirement
After you have driven for 8 hours, you must take a 30-minute break before you can drive any further that day. This break must be uninterrupted — you cannot count two 15-minute breaks as one 30-minute break.
The break can be off-duty time, sleeper berth time, or a combination. Many drivers use this time to eat, refuel, or rest at a truck stop. If you do not take this break, you cannot legally continue driving, and your logbook will show a violation.
If you have driven 8 hours, taken your 30-minute break, and then driven another 3 hours, you have used 11 hours of your daily driving window. You cannot drive any further until you have taken another 10-hour off-duty period.
Intrastate Drivers May Have Different Rules
If you drive only within one state (intrastate commerce), your state may have its own hours-of-service rules that differ from federal rules. Some states allow longer driving days or different off-duty requirements for intrastate work.
Check your state's department of transportation or motor carrier division to learn the specific rules for intrastate driving in your state. Your employer should also provide this information during onboarding. Violating state rules carries the same consequences as violating federal rules — fines, out-of-service orders, and safety record damage.
If you drive both intrastate and interstate, you must follow federal rules whenever you cross state lines, even if your state allows longer hours for intrastate-only work.
Electronic Logging Devices Track Your Hours Automatically
Most CDL drivers now use electronic logging devices (ELDs) instead of paper logbooks. An ELD is a device that connects to your truck's engine and records your driving time, off-duty time, and vehicle movement automatically. You cannot manually enter false hours — the device records what actually happened.
Your ELD syncs with your employer's system, and roadside inspectors can pull your logs on a tablet during a traffic stop. If your logs show a violation — such as driving more than 11 hours or not taking your 30-minute break — you can be cited on the spot.
Falsifying logs, even by a few minutes, is a federal violation. It can result in fines up to $1,000 per violation, out-of-service orders, and disqualification from holding a CDL. Your employer can also face penalties and may terminate you.
What Happens When You Violate Hours-of-Service Rules
A violation can be cited by an FMCSA inspector during a roadside inspection, a weigh station check, or a crash investigation. Common violations include driving more than 11 hours in a day, not taking the required 30-minute break, or driving after your 10-hour off-duty period has not been completed.
Penalties vary by violation severity. A first violation might result in a fine of $100 to $500 for the driver and a larger fine for the carrier. Repeated violations can lead to out-of-service orders, meaning you cannot legally operate a commercial vehicle until the violation is resolved. Multiple violations in a short period can result in disqualification — losing your CDL entirely.
Violations also appear on your safety record with the FMCSA. Employers check this record when hiring, and a history of hours-of-service violations makes you a higher-risk hire. Some carriers will not hire drivers with recent violations.
How to Track Your Hours and Stay Compliant
Your ELD displays your remaining driving hours and alerts you when you are approaching your 8-hour mark (time for your 30-minute break) and your 11-hour limit. Pay attention to these alerts and plan your route accordingly.
Keep a mental or written record of your off-duty time, especially if you use sleeper berth time. Know when your 10-hour reset will be complete so you do not accidentally start driving before you are legally allowed to. If you are unsure whether you have completed your 10 hours off duty, wait — the cost of waiting is far lower than the cost of a violation.
If you are dispatched to a load that would require you to violate hours-of-service rules to complete it on time, refuse the load and report it to your dispatcher or safety manager. You have the legal right to refuse unsafe work, and hours-of-service violations are unsafe. Your employer cannot retaliate against you for refusing.
Frequently Asked Questions
Can I drive 11 hours if I have not taken my 30-minute break yet?
No. You must take a 30-minute break after 8 hours of driving. If you have driven 8 hours and have not taken the break, you cannot drive any further that day, even if you have only used 8 of your 11 available hours. The break is mandatory before you can continue.
Does my 10-hour off-duty time have to be all at once?
If you use a sleeper berth, you can split it — for example, 8 hours in the sleeper berth and 2 hours off duty. If you do not have a sleeper berth, your 10 hours must be consecutive. Check your company policy and your ELD settings to confirm how your off-duty time is recorded.
What if I am stuck in traffic and my 11 hours are almost up?
You must find a safe place to stop before your 11 hours expire. Sitting in traffic does not pause your driving clock. If you are in traffic and approaching your limit, pull over at a safe location — a truck stop, rest area, or shoulder — and take your 10-hour break. Driving past your limit is a violation, even if you were delayed by traffic.
Do hours-of-service rules explore to me if I drive intrastate only?
It depends on your state. Some states follow federal rules for all CDL drivers. Others allow longer hours for intrastate-only work. Contact your state's department of transportation to learn the specific rules for your state and type of work.
Can my employer force me to violate hours-of-service rules?
No. You have the legal right to refuse a load or dispatch that would require you to violate hours-of-service rules. Your employer cannot retaliate, fire you, or penalize you for refusing unsafe work. If your employer pressures you to violate, report it to the FMCSA or your state's transportation department.