California Hours of Service: Limits, Breaks, and Penalties

California’s hours of service rules for intrastate commercial drivers allow truck drivers to drive up to 12 hours within a 16-hour on-duty window after taking 10 consecutive hours off duty, with a ceiling of 80 on-duty hours over any 8-day period. These state limits, enforced by the California Highway Patrol under Title 13 of the California Code of Regulations, are more generous than the federal hours of service rules, but they apply only when every mile of the trip stays inside California. The moment a route crosses a state line, federal rules under 49 CFR Part 395 take over.

Who the Rules Apply To

California Vehicle Code Section 34500 defines the vehicles the CHP regulates for safety, including hours of service. The list covers motortrucks with three or more axles over 10,000 pounds GVWR, all truck tractors, buses, school buses, farm labor vehicles, general public paratransit vehicles, hazardous materials haulers, trailers and semitrailers used with those vehicles, and any commercial motor vehicle rated above 26,001 pounds.¹

The intrastate qualifier is what puts you under state rules rather than federal ones. Carriers running both intrastate and interstate loads have to track which framework governs each trip separately, because assumptions carry over easily and violations follow.

Driving and On-Duty Limits by Driver Type

Title 13, California Code of Regulations, Section 1212.5 sets the driving and on-duty caps. The numbers change based on what you drive.

Truck Drivers

An intrastate truck driver can drive up to 12 cumulative hours after at least 10 consecutive hours off duty. The 12 hours is a total across the shift, not a single stretch. On top of that, no driving is allowed after the 16th hour following the required 10-hour off-duty period.²

That 16-hour window counts every minute of on-duty time from the moment you start work, including loading, fueling, paperwork, and waiting at docks. When the window closes, driving stops, even if you still have unused driving hours left.

Bus Drivers and Tank Vehicle Operators

Intrastate bus drivers have tighter limits: up to 10 hours of driving after at least 8 consecutive hours off duty, and no driving after the 15th on-duty hour.³ Drivers of tank vehicles hauling more than 500 gallons of flammable liquid share the 10-hour driving cap with bus drivers but follow the truck driver off-duty rule, requiring 10 consecutive hours off rather than 8.²

The 80-Hour Weekly Cap

Regardless of driver category, no carrier may allow a driver to operate after accumulating 80 on-duty hours in any consecutive 8-day period.³ The cap follows the driver, not the employer. If you drive for two companies in the same week, both sets of on-duty hours count toward the same 80-hour total. Certain categories, including tow truck operators, can reset accumulated on-duty time to zero by taking at least 34 consecutive hours off duty.⁴

Sleeper Berth Rules

Under Title 13, Section 1212(g), a property-carrying truck driver with a sleeper-equipped vehicle must accumulate at least 10 hours off duty before driving. That can come from 10 consecutive hours in the sleeper berth, 10 consecutive hours off duty, or a combination totaling at least 10 hours.⁵

The 10 hours can also be split into two periods. One period must be at least 8 consecutive hours in the sleeper berth, and the second at least 2 hours in the sleeper berth or off duty. When using this split, any sleeper period of at least 8 but less than 10 hours is excluded from the 16-hour on-duty window calculation, effectively pausing the clock during that rest.⁵ The 12-hour driving limit still applies across both halves and must be recalculated from the end of the first rest period.

Meal and Rest Breaks

Meal and rest break requirements for California drivers come from labor law, not the HOS regulations. Industrial Welfare Commission Wage Order 9, covering the transportation industry, requires a meal period of at least 30 minutes when a work period exceeds 5 hours. A second 30-minute meal period is required when total hours exceed 10, though it can be waived by mutual agreement if the shift won’t go past 12 hours and the first meal break was taken.⁶

Drivers also get a paid 10-minute rest break for every 4 hours worked or major fraction of 4 hours. No rest break is required when total daily work time is less than three and a half hours.⁷ When an employer fails to provide a required meal or rest period, the driver is owed one additional hour of pay at their regular rate for each workday the break was missed.⁶

One boundary matters here. The FMCSA determined in 2018 that federal law preempts California’s meal and rest break rules for property-carrying CMV drivers subject to federal HOS, and the Ninth Circuit upheld that determination in 2021.⁸ The California meal and rest break rules described here apply to intrastate drivers. Drivers running interstate under federal HOS follow the federal break rules instead.

Logs and Electronic Logging Devices

Every driver subject to California’s HOS must keep an accurate Record of Duty Status showing on-duty, off-duty, driving, and sleeper berth time. Since January 1, 2024, most intrastate drivers required to keep a RODS must use an Electronic Logging Device connected to the vehicle’s engine that automatically records driving time.⁹ Paper logbooks alone are no longer sufficient for drivers under the ELD mandate.

Two groups fall outside the ELD requirement. Drivers who need to complete a RODS on no more than 8 days in any 30-day period may still use paper logs.¹⁰ Drivers operating within a 100 air-mile radius of their normal reporting location who return and are released from work within 12 consecutive hours are exempt from keeping a RODS at all, provided the carrier maintains basic time records showing daily report times, total on-duty hours, and release times.⁴ An ELD exemption doesn’t remove the duty to record hours; it just changes how.

Penalties for Violations

Violating a CHP-adopted hours of service regulation is a misdemeanor under California Vehicle Code Section 34506.¹¹ Under the default misdemeanor penalty in California Penal Code Section 19, conviction can bring up to six months in county jail, a fine of up to $1,000, or both.¹²

The CHP can also issue an out-of-service order to any driver caught over the driving or on-duty limits. That forces the driver to stop immediately and complete the required off-duty time before operating again. For carriers, repeat violations can trigger more frequent CHP inspections and audits.

California Intrastate Rules vs. Federal HOS

Drivers who switch between California-only loads and interstate trips need to know where the two frameworks diverge.

Driving time for trucks: 12 hours in California, 11 hours under federal rules for property-carrying vehicles.¹³
On-duty window for trucks: 16 hours in California, 14 hours federal.¹³
Off-duty requirement for trucks: 10 consecutive hours under both.
Mandatory driving break: federal rules require a 30-minute break after 8 cumulative hours of driving. California HOS has no equivalent driving break, though state labor law meal periods may overlap with that function for intrastate drivers.¹³
Sleeper berth split: both allow an 8-hour plus 2-hour split with the two periods totaling at least 10 hours for property carriers.⁵
Weekly cap: California uses an 80-hour/8-day cycle. Federal rules give carriers a choice between 60 hours/7 days and 70 hours/8 days.¹³

The extra driving time and longer on-duty window under California rules give intrastate drivers more room on long hauls within the state. That flexibility ends the moment a load crosses into Nevada, Oregon, or Arizona. A driver used to the 12-hour California limit who picks up an interstate trip and drives the same shift will already be past the federal 11-hour cap.

1
California Legislative Information. California Code Vehicle Code 34500 – Safety Regulations
2
Legal Information Institute. California Code of Regulations 13 CCR 1212.5 – Maximum Driving and on-Duty Time
3
California Code of Regulations. California Code of Regulations 13 1212.5 – Maximum Driving and on-Duty Time
4
Legal Information Institute. California Code of Regulations 13 CCR 1212 – Driver Hours of Service
5
California Code of Regulations. California Code of Regulations 13 1212 – Driver Hours of Service
6
Federal Motor Carrier Safety Administration. California’s Meal and Rest Break Rules for Commercial Motor Vehicle Drivers
7
Department of Industrial Relations. Industrial Welfare Commission Order 9-2001 – Transportation Industry
8
Justia. International Brotherhood of Teamsters v. Federal Motor Carrier Safety Administration
9
California Highway Patrol. Intrastate Electronic Logging Devices
10
Legal Information Institute. California Code of Regulations 13 CCR 1213 – Driver’s Record of Duty Status
11
California Legislative Information. California Code Vehicle Code 34506 – Misdemeanor to Fail to Comply with CHP Regulations
12
California Legislative Information. California Code PEN 19 – Misdemeanor Punishment
13
Federal Motor Carrier Safety Administration. Summary of Hours of Service Regulations