Vehicle Code section 630

A “trailer” is a vehicle designed for carrying persons or property on its own structure and for being drawn by a motor vehicle and so constructed that no part of its weight rests upon any other vehicle. As used in Division 15 (commencing with Section 35000), “trailer” includes a semitrailer when used in conjunction with an auxiliary dolly, if the auxiliary dolly is of a type constructed to replace the function of the drawbar and the front axle or axles of a trailer.

Source: Section 630, https://leginfo.­legislature.­ca.­gov/faces/codes_displaySection.­xhtml?lawCode=VEH§ionNum=630.­ (updated Jan. 1, 1984; accessed Jun. 25, 2025).

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Verified:
Jun. 25, 2025

§ 630's source at ca​.gov