Federal Motor Carrier Safety Administration rules limit the hours commercial truck operators can drive. The regulations also apply to rest periods between shifts. The rules aren't in place to frustrate California truckers craving overtime or companies with pressing deadlines – truck driver fatigue can kill.
A study reported by FMCSA officials said 13 percent of drivers involved in commercial truck accidents were found to be fatigued. Tiredness isn't the only reason truck accidents happen. Driver distractions, like the use of cellphones and other electronic devices, are sometimes an attempt to break the boredom of long hours on the road.