California State Regulations
The following areas have time-specific restricted travel:
- San Diego and vicinity
- Sacramento and vicinity
- San Francisco and vicinity
- Los Angeles and vicinity
Travel restricted on the following holidays: New Year’s Day, Washington’s Birthday (3rd Monday in February), Memorial Day, Independence Day, Labor Day, Thanksgiving Day, Christmas Day. If a holiday falls on a Monday, movement restricted the previous weekend. If a holiday falls on a Friday, movement restricted on the following weekend.
Movement shall not occur in snow, fog, rain or wind when visibility is restricted to less than 1,000 feet (304.8 meters). Movement is prohibited when road surfaces are hazardous due to rain, ice, snow or frost, or when use of tire chains is mandatory. In addition, manufactured housing shall not move when the velocity of the wind is such that it causes the vehicle being towed to whip or swerve from side-to-side or fail to follow substantially in the path of the towing vehicle.
Explanation of California Weight Classifications
California has three classifications for overweight permits: Orange, Green, and Purple. Your classification is based on the weight on each of your axle loading groups
The “axle loading group” is all axles within an 18’0” axle bridge regardless of whether they use a common suspension or not. Anything within 3’6” of each other is considered one axle
For 4 ties per axle at 8’ wide, maximum permitable weight for an axle group for each category is determined by the following formulas:
L=Length in feet between the first and last axle
- Green-1.3 x 700(L+40)
- Purple-1.5 x 700(L+40)
Add 15% for 8 tires per axle at 8’ wide
Add 25% for 8 tires per axle at 10’ wide
Sunrise to sunset
Travel permitted Saturday and Sunday if within orange or green weight classifications* and if no escorts are required.
*See explanation of California weight classifications
Transportation RequirementsProvision Regulations
Anything over routine issue dimensions require special review from the DOT.
Oversize Load Signs
“Oversize Load” signs required for all loads/vehicles over 8′-6″ in width, 80 feet in length or more than 10 feet of overhang. Signs shall be posted on the front and rear of the vehicle or on the front of the lead vehicle and the rear of the back trailer with multi-vehicle combinations.
Dozer blade can be detached and hauled with the dozer on the same trailer if the load would be
overweight with or without the blade.
|Single Axle||20,000 lbs.|
|Tandem Group||34,000 lbs.|
|Gross Weight||80,000 lbs.|
|Length (Vehicle Combination)||65′|
|Kingpin to Rear Axle||40’ (53’ trailer with two or more axles), 38’ (53’ one axle trailers)|
*Overhang is legal up to 10′ as long as the overall length does not exceed 75′.
|Steer Axle||20,000 lbs.|
|Single Axle||20,000 lbs.*|
|Tandem Group||46000 lbs.|
|Tridem Group||60,000 lbs.|
|Height||No less than three-inch (3”) clearance to obstructions**|
|Rear Overhang||Cannot exceed two-thirds of the length of the wheelbase***|
*22,500 lbs. on a single drive axle of a 2-axle tow truck, 28,000 lbs. on a single-axle MDU** heavy haul configuration and some fixed load application
**Route surveys are required for any load exceeding 17′ high.
***The wheelbase of a semitrailer is the distance between the rearmost axle of the towing vehicle and the rearmost axle of the semitrailer.