Hours of Service Regulation: Promoting Commercial Driver Safety

April 13, 2023

Learn about the Hours of Service (HOS) regulation for commercial drivers.

The Hours of Service (HOS) regulation is a set of rules established by the Federal Motor Carrier Safety Administration (FMCSA) to promote safety for commercial drivers and the general public. These rules determine the number of hours a commercial driver can work and the amount of rest they must have to ensure they are not driving while fatigued. 


The HOS regulation applies to drivers of commercial motor vehicles (CMVs), which include vehicles such as trucks, buses, and tractor-trailers. These drivers are required to follow strict rules that limit the amount of time they can spend behind the wheel before taking a break. 


Property-Carrying CMVs

There are two sets of rules that drivers must follow. The first set is for property-carrying CMVs, and the second set is for passenger-carrying CMVs. The rules for property-carrying CMVs are as follows: 


  • A driver can work a maximum of 14 hours in a day, but they can only drive for up to 11 hours in that period. 
  • After driving for 8 hours, a driver must take a 30-minute break. 
  • A driver cannot drive for more than 60/70 hours in a week. The exact number depends on the employer's operations. 
  • A driver must take at least 34 consecutive hours off duty before starting a new workweek. 


Passenger-Carrying CMVs

The rules for passenger-carrying CMVs are similar, but there are some differences. The rules for passenger-carrying CMVs are as follows: 

  • A driver can work a maximum of 15 hours in a day, but they can only drive for up to 10 hours in that period. 
  • After driving for 8 hours, a driver must take a 30-minute break. 
  • A driver cannot drive for more than 60/70 hours in a week. The exact number depends on the employer's operations. 
  • A driver must take at least 8 consecutive hours off duty before starting a new workday. 


These rules are designed to prevent drivers from becoming fatigued and driving while drowsy, which is a leading cause of accidents involving commercial vehicles. In addition to the hours of service rules, drivers are required to keep a logbook to track their driving hours and rest periods. The logbook must be current and accurate and must be presented to law enforcement upon request. 

Violating the HOS regulations can result in significant penalties for drivers and their employers. Penalties can include fines, suspension of driving privileges, and even revocation of a commercial driver's license. Therefore, it is crucial that commercial drivers and their employers understand and comply with the HOS regulations. 


In conclusion, the Hours of Service regulation is a critical safety measure designed to prevent accidents involving commercial vehicles. By limiting the number of hours a driver can work and requiring adequate rest, the HOS regulations help ensure that drivers are alert and focused when they are behind the wheel. It is essential that commercial drivers and their employers follow these regulations to ensure the safety of everyone on the road. 

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