In California, CDL drivers have to follow two sets of rules, one for intrastate and one for interstate.
California intrastate HOS rules
For intrastate trips (according to California hours-of-service guidelines):
- Drivers can’t exceed 12 hours of driving after being off duty for at least 10 consecutive hours.
- Drivers must stop driving for at least 10 hours after 16 hours of work (driving or not).
- Drivers aren’t permitted to drive after being on duty for 80 hours in any given consecutive eight-day period.
California interstate FMCSA guidelines
For interstate trips (according to FMCSA guidelines):
- As long as they’ve been off duty for at least 10 consecutive hours, drivers can be on duty for up to 14 consecutive hours. This 14-hour work window begins as soon as the driver begins their shift, whether they’re driving or not.
- Drivers can only be behind the wheel for up to 11 hours during the 14-hour work window.
- If it’s been eight or more hours since their lasst break, truckers must take a break of at least 30 minutes.
- Depending on their schedules, drivers can only work for up to 60 hours in any seven-day workweek, or 70 hours in any eight-day workweek.