Overhang from the front of trailer.
Heavy haul and oversize loads are permitted to protrude from the front of the trailer any safe distance provided it does not interfere with the safe operation or the truck and trailer. If the trailer is designed to move shipments above the cab such as cars the maximum overhang allowed is 4 feet. Overhang from combination trailers is restricted to 3 feet.

Overhang from the rear of trailer.
Any shipment loaded onto a trailer or semitrailer shall not extend beyond the rear past the last point of support for a greater distance than that “equal to two-thirds of the length of the wheelbase. The wheelbase of a semitrailer shall be considered as the distance between the rearmost axle of the towing vehicle and the rearmost axle of the semitrailer.”

Lights and flags for shipments that have rear overhang.
Whenever overhang projects out more than 4 feet or more (measured from the tail lamp lens on trailer) you will be required to affix a red or florescent orange flag a minimum of 18 inches square to the extreme projection. If the projection is greater than 2 feet in width you will be required to use 2 warning flags. On shipments that travel after sunset in addition to the flags you are required to use red bulbs (not rated over 6 candle power) that are clearly visible from a minimum distance of 500 feet from both the sides and rear of the shipments extremities.

Exemptions for poles, timber, pipes, etc.
For shipments such as poles, timber (trees), pipes and similar items a shipment can be transported as long as it is within the limitations as described in CVC length chapter. However, any shipment  vehicle length limitations of the CVC length chapter do not apply when only poles, timbers, pipes, integral structural materials, or single unit component parts such as missile components, aircraft assemblies, drilling equipment, and tanks not exceeding 80 feet in length are being transported upon any of the following: a pole or pipe trailer, public utility companies or agencies supplying electricity, cable/telephone to include public contractors working directly for the state entity. There are a few exceptions: 1. The combination meets the limitations described above in the “overhang from rear of vehicle” referring to two thirds (2/3) of the wheelbase distance). 2. Transportation is local and between a place designated as a “storage yard” and the job locations may not be restricted under these limitations.

Forklifts protruding from trailers.
A forklift being transported from the rear of any trailer is considered overhang and subject to the limitations described above in “overhang from the rear of trailer” and must meet the two thirds (2/3) measurement restrictions. For length requirements, see the California laws referring  to maximum lengths.

Projections from the side of trailers.
Any shipment that protrudes from either side of the trailer in excess of 4 inches to a maximum of 2 feet must place red or orange florescent safety flags (minimum of 18 inches square) on each side of  the rear end of the shipment if it is in excess of 2 feet in width. If the shipment is no greater than 4 inches (up to 2 feet) warning flags must be placed on all 4 extreme corners of the shipment.

Boat shipping boom, masts, cranes, shovels and drilling equipment restrictions.
Transporting booms, masts, cranes, shovels or drilling equipment is permitted provided it meets the two thirds (2/3) provisions described above in “overhang from rear of trailer”. Any protrusions from the trailer must be secured to prevent and bending or movement.  Front projections that may extend further than the front axle must be a minimum of 7 feet above the pavement and must not restrict the vision of the truck driver.

Container shipping and overhang limitations.
For container shipping companies that have intermodal capabilities whether shipping within or out of the state of California must ensure that all lower corners are securely fastened to the trailer. On trailers that are not designed as “intermodal” trailers you are not permitted to overhang from the front or rear of your trailer and all 4 corners must rest securely upon your trailer however, IF the trailers are completely empty overhang is permitted provided it meets all other overhang restrictions and does not protrude more than 5 feet from the front or rear of the trailer. Also keep in mind the state of California conforms to the regulations defined in the Code of Federal Regulations (CFR), Title 49, Part 393, Section 126 (c) and (d) as well as California state law defined in the California Code of Regulations (CCR): Title 13, Div 2, Chap 7, Article 1, Section 1300 (b). If you intend on operating as a container shipper it is strongly advised you clearly understand the limitations set in both federal and state laws.

Draw bars or load extensions.
Extension devices or draw bars up to 18 inches in length are not included in measuring the length of a tractor or trailer individually but are included in measuring a shipments overall length. If you are simply towing a small trailer,  boat, car or a camper see the California sections on the “Auto, Boat, & Camper Transporters Exemptions.”

Safety devices to ensure trailer attachments.
Any safety devices that are used to insure trailer is secured to the towing vehicle are permitted provided they are no longer than 10 inches in length.