Abbreviation: HOS

Hours of Service

Federal rules in 49 CFR Part 395 limiting how long a CDL driver may drive and remain on duty in a given day or week.

Key property-carrier limits: 11-hour driving limit after 10 consecutive hours off duty; 14-hour on-duty window; 30-minute break after 8 hours of driving; 60/70-hour weekly limit. The 34-hour restart provision allows resetting the weekly counter. ELDs enforce these limits automatically.

Related: eld , rods , 34 hour restart , short haul exemption , personal conveyance

Last updated: May 28, 2026