Hours of Service Rules: The Complete Compliance Guide for Fleet Managers and CDL Drivers

An inspector at a scale house in Ohio pulls your driver's ELD record, scrolls back seven days, and finds a 14-hour window that ran to 14 hours and 12 minutes. Twelve minutes. That is enough to write the violation, log the CSA points, and, depending on the situation, put the driver out of service on the spot. Hours of Service rules do not grade on effort. They grade on the clock.

The full rulebook lives in 49 CFR Part 395, and the FMCSA keeps a plain-English summary of the core limits. This guide walks through every one of them, then points you at the violations that most often cost fleets a roadside out-of-service order. Read it the way an inspector reads a log: looking for the gap.

The four clocks every property-carrying driver runs at once

Most CDL drivers haul property, so start there. Four limits run simultaneously, and you have to satisfy all four. Break any one and you are in violation, even if the other three are clean.

The 11-hour driving limit. After 10 consecutive hours off duty, a driver may drive a maximum of 11 hours. Hit 11 hours of actual driving and the wheels stop until the next 10-hour reset.

The 14-hour limit. A driver may not drive beyond the 14th consecutive hour after coming on duty, following 10 consecutive hours off. This is the clock that catches people. It runs in real time. Off-duty time during the day, lunch, a long dock wait, a nap in the cab, does not pause it or push it back. Once you clock in, the 14-hour window is burning whether you are moving or not. (The sleeper berth split, covered below, is the one regulatory exception to this rule.)

The 30-minute break. A driver cannot drive after 8 cumulative hours of driving time without first taking a break of at least 30 consecutive minutes. The break can be off-duty, sleeper berth, or on-duty not driving. The trigger is 8 hours of driving, not 8 hours on the clock.

The 60/70-hour limit. A driver may not drive after 60 hours on duty in 7 consecutive days, or 70 hours in 8 consecutive days, depending on the carrier's operating schedule. A driver can restart that count with 34 or more consecutive hours off duty, the 34-hour restart.

Passenger-carrying drivers run different numbers: a 10-hour driving limit after 8 hours off, and a 15-hour on-duty limit. If you run motorcoaches or shuttles, do not borrow the property rules.

Sleeper berth splits, where good drivers still get tripped up

The sleeper berth provision under 49 CFR 395.1(g) lets a driver split the required 10 hours off into two periods. One period must be at least 7 consecutive hours in the sleeper berth. The other must be at least 2 consecutive hours, either off duty or in the berth. Together they have to add up to at least 10.

Here is the part that confuses people. Neither qualifying period counts against the 14-hour driving window. Used correctly, a 7/3 or 8/2 split gives a driver flexibility on a long, dock-heavy day. Used incorrectly, with a period that runs 6 hours and 50 minutes instead of 7, it counts for nothing and the driver blows the 14-hour clock without realizing it. The minimums are 7 hours for the berth period and 2 hours for the paired period, together totaling at least 10. Any combination meeting those floors is valid under current 49 CFR 395.1(g).

FMCSA is currently recruiting a small group of drivers to test the study design for a Flexible Sleeper Berth pilot program, one piece of DOT Secretary Duffy's Pro-Trucker Package, but no rule change is in effect or finalized. Until a final rule publishes, the current 7-and-2-hour minimums under 49 CFR 395.1(g) stand.

The short-haul exemption and the 16-hour exception

Two relief valves exist. Know exactly where they end, and know that there are two distinct short-haul provisions.

The non-CDL short-haul exemption under 49 CFR 395.1(e)(1) frees qualifying non-CDL drivers from keeping a full ELD record if they operate within a 100 air-mile radius of the normal work reporting location and return to that location within 12 hours.

The CDL short-haul exemption under 49 CFR 395.1(e)(2) covers CDL drivers who operate within a 150 air-mile radius and return within 14 hours. Drivers who qualify under either provision still obey the 11-hour and 60/70-hour limits, but they skip the logging device and the 30-minute break requirement under 49 CFR 395.3(a)(3)(ii). Match your driver to the right section. The radius and the time window are not the same between the two.

The 16-hour short-haul exception lets certain drivers extend the 14-hour limit to 16 hours once per cycle, under tight conditions. It does not extend the 11-hour driving limit. Misreading any of these as a blanket pass is a fast way to earn a violation.

The violations that actually put trucks out of service

Inspectors are not hunting for theory. They are hunting for patterns in the log. These are the ones that show up most:

• Driving beyond the 14-hour window. The single most common form-and-manner catch because the clock is unforgiving and drivers misjudge dock time.
• Exceeding the 11-hour driving limit. Often the result of stop-and-go traffic eating into a tight plan.
• No 30-minute break after 8 hours of driving. Easy to miss on a day that felt like it had plenty of stops, but none of them hit 30 consecutive minutes.
• False logs and ELD edits that do not reconcile. Editing a record to hide drive time is treated as falsification, and it is the violation that turns a routine stop into a serious finding.
• Form-and-manner errors. Missing data, unassigned driving time, unidentified driver records the carrier never claimed.

Each of these feeds your HOS Compliance BASIC. Patterns of fatigued or reckless driving can also affect the Unsafe Driving BASIC, but HOS log violations score specifically under HOS Compliance. If you do not track how these scores compound, read our breakdown of how CSA scores put your fleet at risk. The points outlast the violation by 24 months, and they drive up inspection frequency, insurance costs, and your odds of an intervention. The recent enforcement posture from DOT and FMCSA has made HOS one of the first things inspectors pull.

How to audit your own logs before an inspector does

The whole point of HOS compliance is to find the gap before the scale house does. A monthly self-audit catches the patterns that turn into out-of-service orders.

Pull a sample of driver logs and check four things. First, scan for any 14-hour window that crept past 14:00, even by minutes. Second, confirm every driving block longer than 8 hours has a clean 30-minute break in front of it. Third, reconcile every edit and annotation against supporting documents, fuel receipts, dispatch records, gate times. Fourth, hunt down unassigned driving time and assign it or document why you cannot.

A fleet that audits HOS in isolation often misses connected failures: a driver with a clean log but an expired medical certificate is still an out-of-service risk. That picture includes DVIR pre-trip inspections and driver qualification files. And the human side matters too: a driver who cannot understand an inspector's questions about a log can turn a clean record into a roadside problem, which is why English proficiency under 49 CFR 391.11 is back on the enforcement radar.

There is no regulatory audit frequency requirement, but reviewing logs monthly gives you time to correct patterns before a compliance review captures them. The fleets that get burned are the ones that only look at the logs after the violation report shows up.

Frequently Asked Questions

Does off-duty time stop the 14-hour clock? No. For property-carrying drivers, the 14-hour limit runs in consecutive real time from the moment the driver comes on duty after 10 hours off. Lunch, dock waits, and naps in the cab do not pause or extend it. The only thing that resets it is a qualifying off-duty or sleeper berth period. The sleeper berth split is the one exception that can keep berth time outside the window.

What is the difference between the 60-hour and 70-hour limit? The applicable limit is based on the carrier's operating schedule as established under 49 CFR 395.3(b). Carriers operating CMVs every day of the week are subject to the 70-hour/8-day rule. Carriers that do not are subject to the 60-hour/7-day rule. Your driver follows one or the other, not both. A 34-hour restart resets either count.

Can a driver use the 30-minute break and a sleeper period at the same time? The 30-minute break can be satisfied by off-duty, sleeper berth, or on-duty not driving time, as long as it is at least 30 consecutive minutes and comes before the driver accumulates 8 hours of driving time. A longer sleeper period that includes 30 consecutive minutes can satisfy the break requirement, but the qualifying periods for a sleeper split have their own separate length rules of 7 and 2 hours.

Are owner operators exempt from HOS rules? No. Hours of Service under 49 CFR Part 395 applies to drivers operating commercial motor vehicles in interstate commerce regardless of whether they own the truck. The short-haul exemptions may relieve some owner operators of the ELD and 30-minute break requirements, but only if they stay within the applicable air-mile radius and return within the applicable time window under 49 CFR 395.1(e).

How long do HOS violations stay on a CSA record? Roadside violations remain in the FMCSA Safety Measurement System for 24 months. The SMS weights violations on a three-tier decay: highest weight in the first 6 months, reduced weight from months 7 through 12, lowest weight from months 13 through 24, after which they age off entirely. A single HOS violation rarely sinks a fleet, but a pattern raises your BASIC percentile and increases your odds of inspection and intervention.

What counts as falsifying a log? Editing or annotating an ELD record to hide actual driving time, recording personal conveyance for clear business driving, or submitting records that do not reconcile with fuel receipts, gate logs, or dispatch data. Falsification is treated far more seriously than a form-and-manner error and can carry civil penalties up to $16,000 per violation for drivers and carriers under 49 CFR Part 386, with egregious or pattern violations carrying higher exposure. Confirm the current inflation-adjusted figure against FMCSA penalty guidance before relying on it.