⏱️ HOS Violation Risk Checker
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Understanding FMCSA Hours of Service Rules
Hours of Service (HOS) regulations govern how many hours a commercial motor vehicle driver can operate a CMV. The rules exist to prevent fatigue-related crashes, which are a significant cause of serious trucking accidents. For property-carrying drivers, the main limits are: 11 hours of driving after 10 hours off duty, all driving must occur within a 14-hour on-duty window, a 30-minute rest break after 8 hours of cumulative driving, and a 70-hour/8-day limit on total on-duty time.
HOS violations are consistently among the top out-of-service violations at roadside inspections. The FMCSA uses Electronic Logging Device (ELD) data and paper logs to verify compliance. Violations can result in out-of-service orders (driver cannot drive until rested), civil penalties, and negative impact on your CSA BASIC scores — which can flag your carrier for increased inspection rates.
The best HOS compliance strategy is proactive tracking. Drivers should monitor their available hours throughout the day and plan routes that allow for required rest. Dispatchers should build HOS constraints into their scheduling. Modern ELD systems from Samsara, KeepTruckin, and others provide real-time HOS alerts — a significant compliance improvement over paper logs.