Hours of Service Violations and Trucking Accident Liability

Federal Hours of Service (HOS) regulations are the legal framework limiting how long commercial drivers can operate before mandatory rest. In trucking accident litigation, HOS violations are often the most powerful liability evidence available.

Why HOS Violations Matter in Litigation

A driver who was in violation of HOS regulations at the time of a crash is presumptively fatigued under the negligence per se doctrine. The carrier's overall HOS violation rate establishes a pattern of pushing drivers beyond legal limits — evidence of systemic negligence rather than isolated error.

The Most Important HOS Violation Codes

395.8(e) — Falsified Log — Log falsification is the highest-value HOS violation from a plaintiff perspective. When a driver falsified their electronic or paper log and was then involved in a crash, the falsification constitutes consciousness of guilt evidence. Carriers with high rates of 395.8(e) violations are systematically instructing or pressuring drivers to conceal HOS violations.

395.8(a) — Hours Exceeded — The driver exceeded the maximum allowable driving hours. Combined with crash data, this directly supports a fatigue causation theory.

395.3(a)(3) — 11-Hour Rule — The 11-hour maximum driving limit violation. One of the most common and clearest fatigue indicators.

395.3(a)(2) — 14-Hour Rule — The 14-hour on-duty limit. Violations indicate drivers were operating at the end of extremely long work days.