What regulation governs the maximum driving hours for commercial drivers?

Answer: B — Hours of Service (HOS) regulations

The maximum driving hours for commercial drivers are governed by the Hours of Service (HOS) regulations. These regulations are specifically designed to ensure that drivers maintain safe operation of their vehicles and reduce the risk of accidents caused by fatigue. The HOS regulations set forth clear limits on the number of hours a driver can operate a commercial vehicle without rest, as well as requirements for rest breaks and the overall work schedule. These guidelines are critical for maintaining not only the safety of the driver but also the safety of other road users. They establish the legal framework that commercial drivers must follow to prevent exhaustion and promote alertness while driving. Compliance with HOS regulations is mandatory for all commercial drivers, which is why they stand as the correct reference for managing driving hours in the commercial vehicle industry.