State Oversize Permits & Escorts Information


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California DOT Phone Number: (916) 322-1297

DOT Website

PERMITS: California oversize permits are valid for seven days.

OPERATING TIME: Continuous travel normally allowed if load does not require escorts, detours off of state routes, and does not exceed a two-vehicle configuration. Load must be lighted for night travel.

RESTRICTED TRAVEL: Restricted times (no travel) for loads over 10′ wide, Monday through Friday: Sacramento, San Francisco and San Diego areas: 7:00 am – 9:00 am & 4:00 pm – 6:00 pm. Los Angeles area: 6:00 am – 9:00 am & 3:00 pm – 6:00 pm. *San Francisco/Oakland Bay Bridge: 6:30 am – 9:00 am & 3:30 pm – 6:30 pm. *Over 11′ wide or overheight require highway patrol escort. Over 12′ wide restricted to 11:00 am – 1:00 pm Monday – Friday. Call 707-648-4180. Holiday travel restrictions usually apply only for larger loads.

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  • 75′ (65′ on non-designated highways)
  • 48′ semitrailer

Note: 53′ semi-trailers are not legal unless the kingpin to center of rear axle does not exceed 40′. Longer trailers can be permitted only if they are stretched for a specific load, or it can otherwise be justified by the load.

Overhang: 10′, as long as length including overhang does not exceed 75′ overall.

Width: 8′-6″

Height: 14′ (over height not permitted on flatbed, see next section)

Weight: 80,000 Gross

  • Steer – 12,500
  • Single – 20,000
  • Tandem – 34,000
  • Tridem – depends on axle spread Spread Axle Tandem (10′ to  10′-2″ spread) is legal at 40,000 (20,000 – 20,000)

Length: Generally up to 135′

Overhang: When rear overhang puts the tractor/trailer over 75′ total length, California may deny a permit and require the load to be on a stretch trailer.

Width: 15′

Height: Depends on route. Over legal height not permitted on a flat-bed trailer unless the load length justifies use of a flatbed.


  • Steer – 12,500
  • Single – 20,000
  • Tandem – 46,000*
  • Tridem – 58,061 to 60,000*

*These vary depending on axle spacings and routes (ex: Tridem with 9′ of spacings can get 59,168 pounds). Spread axle tandems (8′ to 10′-2″ spread) can only have 40,000 pounds maximum. Tridems with over 10′ spacing (5′ – 5′) can only be permitted for 40,000 pounds maximum.

Over 15′ wide, 17′ high or 135′ long are considered super loads.



  • Over 100′ in LA City – two escorts
  • Over 120′ to 135′ – one or more escorts

Overhang: Over 30′ front or rear – one or more escorts.


  • Over 12′ – one or two escorts (Some local routes may need escort under 12′).
  • Over 13′ on two-lane – two escorts on some routes.
  • Over 14′-11″ on Interstate and four-lane – two escorts
  • Over 16′ (over 15′ on two-lane) also needs CHP escorts (three CHPs)

Height: Over 18′ – one escort with high pole, utility clearance and route survey. CHP escorts may also be required. If escort is desired for a lower height, it must be stated on the permit, or you will be subject to a fine.

MISCELLANEOUS: No rear overhang is allowed for loaded shipping containers, 5′ rear allowed for empties. Overheight not permitted for shipping containers. Buckets, blades, counterweights do not need to be removed. Blade can be detached and hauled on same trailer with an overweight dozer, but permit must state it (“blade detached and reloaded”). Permits are not issued for tow-aways without an inspection report on the tow-away unit, or Cal-Trans permission and inspection appointment. If the tow- away unit is not registered, it also needs a temporary CA registration, which will be ordered when the permit is ordered. Four- axle tractors must have a CA inspection report or permission and inspection appointment. Single axle jeeps and boosters must have a Caltrans inspection before they can be permitted in California.

SIGNS, FLAGS & LIGHTS: Signs and flags are required on vehicles over 8′-6″ wide, over 80′ long, or with over 10′ overhang. Signs are also required when overweight only. For night running, amber marker lights are required at front corners of load and one on left outside extreme edge, visible from front and sides, and red at rear corners visible from rear and sides. Los Angeles County also requires the amber lights at all protrusions and at 5′ intervals completely around the load (and red in the rear), not over 5′ above ground level. When a rear overhang is 4′ or greater, it requires at least two lights or rear light bar at night. Rear light bar not needed on long load in daylight unless turn signals and brake lights are hidden by load.

Trailers exceeding 48 feet in length are not legal in California unless the kingpin to center of rear axle does not exceed 40 feet! Longer trailers can be permitted only when justified by length of the load.

Important Notice:
The following is provided for informational purposes only. We do not procure or arrange permits on behalf of carriers or discuss permit and escort requirements for particular shipments. The following links provide general guidelines for oversize permits and escorts for heavy haul shipping by state/province. State regulations are subject to change; If you find inaccurate information, please let us know, and we will update the page accordingly.