Fmcsa 16-Hour Rule 2025. Department of transportation’s federal motor carrier safety administration (fmcsa) today published a final rule updating hours of service (hos). Department of transportation’s federal motor carrier safety administration (fmcsa) today published a final rule updating hours of service (hos).

Fmcsa revises the hours of service (hos) regulations to provide greater flexibility for drivers subject to those rules without adversely affecting safety. Eligible drivers can extend their workday to 16 hours once per week.