Violations, Exemptions, and Enforcement Consequences

Hours of Service Violations, Exemptions, and Enforcement Consequences

Hours of Service (HOS) rules exist to prevent fatigued driving — one of the most serious safety hazards in commercial transportation. Violating these rules does not just risk a fine; it can put you, your carrier, and every other road user in danger. This lesson shows you how to spot violations in logs and ELD records, understand which exemptions apply, and know what enforcement consequences follow a violation.

Common HOS Violations

Federal HOS regulations (found in 49 CFR Part 395) set hard limits on driving and on-duty time. The violations most frequently cited at roadside inspections fall into several categories.

Exceeding the 11-Hour Driving Limit. Property-carrying drivers may drive a maximum of 11 hours after 10 consecutive hours off duty. Any driving beyond that limit is a violation. On a paper log, look for the line between "Driving" and any other status that pushes the driving total past 11 hours in a 24-hour period.

Exceeding the 14-Hour On-Duty Window. You may not drive after the 14th consecutive hour following the start of your on-duty period, even if you have driving time remaining. Rest breaks do not extend this window.

Insufficient Off-Duty/Sleeper Time. Drivers must have at least 10 consecutive hours off duty before the next driving period. Splitting sleeper-berth time is permitted under specific rules, but both periods must meet the required minimums.

Exceeding the 60/70-Hour On-Duty Limit. Drivers working for carriers operating 7 days a week may not drive after accumulating 70 hours on duty in 8 consecutive days. Carriers operating fewer days use the 60-hour/7-day limit. A 34-hour restart (including two periods from 1 a.m. to 5 a.m.) resets this cycle.

False Logs and Form-and-Manner Errors. A false record of duty status — intentionally recording less driving time than actually occurred — is a serious violation. Form-and-manner errors are technical errors: missing the co-driver's name, home terminal address, or total miles driven. Both types can be cited at inspection.

Reading Paper Logs vs. ELD Printouts

On a paper log, each duty status is drawn as a horizontal line in one of four rows (Off Duty, Sleeper Berth, Driving, On Duty Not Driving). Violations appear as arithmetic errors (total hours exceeding limits) or as duty-status entries that contradict other evidence such as fuel receipts or GPS data.

An ELD automatically records engine-on driving time. When reviewing an ELD printout, look for unassigned driving segments (driving detected but not assigned to a driver), missing required edits, or a pattern showing the driver exceeded a limit. ELDs must produce a data file or printout that an officer can review roadside or that the driver can email to enforcement.

Out-of-Service Criteria

The Commercial Vehicle Safety Alliance (CVSA) publishes Out-of-Service (OOS) criteria that officers use at roadside. Under current CVSA HOS criteria, a driver is placed out of service for violations such as driving beyond the maximum daily driving limit by a significant margin, insufficient off-duty time, and falsification of records. Being placed out of service means you may not operate the vehicle until the violation is corrected and the required rest is obtained. The vehicle can also be placed out of service if the driver has no valid logbook or ELD record.

Driver and Carrier Penalties

FMCSA can assess civil penalties against both drivers and carriers for HOS violations. Penalty amounts are set by federal regulation and are periodically adjusted; the key point is that carriers face separate penalties for each violation and for allowing or requiring drivers to violate HOS rules. Carriers found to have a pattern of violations can face higher penalty levels or even operations being shut down through an Out-of-Service Order. A driver's CDL can be disqualified for serious or repeated violations. Every citation also affects a carrier's Safety Measurement System (SMS) score, which is publicly visible and influences shipper contracts and insurance rates.

Short-Haul Exemption

Drivers who operate within a 150 air-mile radius of their normal work-reporting location and return to that location every day may qualify for the short-haul exemption. Qualifying drivers do not need to keep a paper log or use an ELD, but they must still comply with the 11-hour driving limit and the 14-hour on-duty window. The carrier must keep time records showing start and end times for at least six months.

Agricultural Exemption

During designated planting and harvest periods, agricultural commodities transported within a 150 air-mile radius of the source are exempt from HOS rules. Each state sets its own agricultural exemption windows. Even during an agricultural exemption, drivers must operate safely and are still subject to the general requirement not to drive while impaired by fatigue.

Adverse Driving Conditions Exception

If a driver encounters unexpected weather or road conditions not known at dispatch, the driver may extend the driving window by up to 2 additional hours to reach a safe stopping point. This exception does not extend the 14-hour on-duty window and must be noted in the log.

Personal Conveyance

Time spent moving a commercial vehicle for the driver's personal use (such as driving from a truck stop to a nearby restaurant after going off duty) may be recorded as off duty under the personal conveyance provision, provided the vehicle is not loaded or under dispatch. Carriers must have a written personal conveyance policy, and ELDs record personal conveyance as a special annotation.

Safety Reminder

Fatigue impairs judgment and reaction time. If you are approaching an HOS limit, plan your route to stop safely before reaching it. No delivery schedule justifies driving in violation of HOS rules. When in doubt, stop, rest, and log it correctly.