"Driver Hours" refers to the regulations that govern the amount of time a commercial driver can operate a vehicle. These rules are designed to ensure safety by preventing fatigue, which can lead to accidents. Typically, drivers must take regular breaks and cannot exceed a certain number of driving hours within a day or week. In the United States, the Federal Motor Carrier Safety Administration (FMCSA) sets these limits. For example, a driver may be allowed to drive for a maximum of 11 hours after taking 10 consecutive hours off duty. Adhering to these regulations helps maintain road safety for everyone.