California Oversize/Overweight Permits



Permits – Permits are valid for 7 days.


Operation Hours – Travel is allowed 24hours a day, 7 days a week (but must be requested at the time of order) unless an
escort is required or load exceeds a 2 vehicle configuration; or exceeds green loading weight or
a detour is required, width does exceed lane width. In this case, it is restricted to one-half hour
before sunrise to one-half hour after sunset.




  • 75′ (65′ on non-designated highways)
  • 48′ semitrailer
Height14′ (overweight not permitted on a 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′ – 10’2″ spread) is legal at 40,000 (20,000 – 20,000)
Overhang10′ as long as length including overhang does not exceed 75′ overall
Note53′ 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.



Lengthusually up to 135′
  • Steer – 12,500
  • Single – 20,000
  • Tandem – 46,000*
  • Tridem – 58,061 to 60,000*
HeightDepends on a route. Over legal height not permitted on a flat-bed trailer unless the load length justifies the use of the flatbed.
OverhangWhen 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.


Escorts/Pilots for Oversize/Overweight Transport

When Escorts are Needed:
Width over 12′1 Front
Lenght 120′ to 135′1 or more (depends on location)
Lenght over 100′ in LA city2 (Front & Rear)
Width over 14′Minimum 3
(2 Front & 1 Rear)
2+ 100′ in LA county
Overhang over 30′1
Height 18′ or more requires utility clearance, route survey, etc.1 w/High Pole
For height under 18′:if not required by permit but is desired by a trucking company, due to load, be sure to state “a high pole etc. to be used” on permit application else subject to possible fine
Fixed load-front overhang exceeds 25′ from the bumper or if no bumper from front tires1 or more
Crane’s boom or mast, drill rig or well service equipment extends over 25′ from front tires1 or more
Rear projection over 25′ beyond trailer1 or more
Not required for max permittable rear boom overhang of 30” measured from rear tire’s center. Insurance company’s “exemption” letter is no longer valid1 or more
Truck crane rear boom overhang over 30′ beyond the last point of support of vehicle bed1 or more
Load width exceeds lane width and if the length and/or load and/or vehicle encroaches into the adjacent lane.1 or more
(Normally escorts are not required on the urban freeway where right lane Has been reduced to less than 12′ and load width is 11′ or 12′)

Escorts for route “E” classification determined by district permit engineer

Rear overhang of any fixed driven or towed vehicle exceeds 30′ when measured from the centerline of the last axle1 or more



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-foot intervals completely around the load (and red in the rear), not over 5 feet 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 a 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 the length of the load.



Restricted times (no travel) for loads over 10′ wide, Monday through Friday: Sacramento, San Francisco and San Diego areas: 7:00 – 9:00 a.m. & 4:00 – 6:00 p.m. Los Angeles area: 6:00 – 9:00 a.m. & 3:00 – 6:00 p.m. *San Francisco/Oakland Bay Bridge: 6:30 – 9:00 a.m. & 3:30 – 6:30 p.m. *Over 11′ wide or overheight require highway patrol escort. Over 12′ wide restricted to 11:00 a.m. – 1:00 p.m. Monday – Friday. Call at (888) 799-8858. Holiday travel restrictions usually apply only for larger loads.