Every year, thousands of commercial vehicle accidents are caused by negligent drivers. Common acts of carelessness that result in truck accidents include: Aggressive driving Distracted driving Driving under the influence of alcohol or other drugs Driving while fatigued Improper braking Fatigued driving in particular is a risk inherent to commercial transit, and to discourage this potentially threatening behavior, the Federal Motor Carrier Safety Administration (FMCSA) requires that trucking companies and drivers adhere to strict regulations regarding hours of service. These dictate how many hours over the course of a set number of days drivers may operate their vehicles and how much rest they must take. In spite of this, some truckers push beyond the limits, and some companies encourage their drivers to do so.