V C Section 29004 Towed Vehicle
29004. (a) (1) Except as required under paragraph (2), a towed vehicle shall be coupled to the towing vehicle by means of a safety chain, cable, or equivalent device in addition to the regular drawbar, tongue or other connection.
(2) A vehicle vehicle towed by a tow truck shall be coupled to the tow truck by means of at least two safety chains in addition to the primary restraining system. The safety chains shall be securely affixed to the truck frame, bed, or towing equipment, independent of the towing sling, wheel lift, or under-reach towing equipment.
(3) A vehicle transported on a slide back carrier tow truck or on a trailer shall be secured by at least four tiedown chains, straps, or an equivalent device, independent of the winch or loading cable. This subdivision does not apply to vehicle bodies that are being transported in compliance with Sections 393.100 to 393.136, inclusive, of Title 49 of the Code of Federal Regulations.
(b) All safety connections and attachments shall be of sufficient strength to control the towed vehicle in the event of failure of the regular hitch, coupling device, drawbar, tongue, or other connection. All safety connections and attachments also shall have a positive means of ensuring that the safety connection or attachment does not become dislodged while in transit.
(c) No more slack may be left in a safety chain, cable, or equivalent device than is necessary to permit proper turning. When a drawbar is used as the towing connection, the safety chain, cable, or equivalent device shall be connected to the towed and towing vehicle and to the drawbar so as to prevent the drawbar from dropping to the ground if the drawbar fails.
(d) Subdivision (a) does not apply to a semitrailer having a connecting device composed of a fifth wheel and kingpin assembly, and do not apply to a towed motor vehicle when steered by a person who holds a license for the type of vehicle being towed.
(e) For purposes of this section, a "tow truck" includes both of the following:
(1) A repossessor’s tow vehicle, as defined in subdivision (b) of Section 615.
(2) An automobile dismantler’s tow vehicle, as defined in subdivision (c) of Section 615.
A vehicle towed by a repossessor’s tow vehicle, as defined in subdivision (b) of Section 615, is exempt from the multisafety chain requirement of paragraph (2) of subdivision (a) so long as the vehicle is not towed more than one mile on a public highway and is secured by one safety chain.