Terms Used In California Codes > Vehicle Code > Division 12 > Chapter 3 > Article 1 - Brake Requirements

• auxiliary dolly: is a vehicle, not designed for carrying persons or property on its own structure, which is so constructed and used in conjunction with a semitrailer as to support a portion of the weight of the semitrailer and any load thereon, but not permanently attached to the semitrailer, although a part of the weight of such dolly may rest on another vehicle. See California Vehicle Code 225
• axle: is a structure or portion of a structure consisting of one or more shafts, spindles, or bearings in the same vertical transverse plane by means of which, in conjunction with wheels mounted on said shafts, spindles, or bearings, a portion of the weight of a vehicle and its load, if any, is continuously transmitted to the roadway when the vehicle is in motion. See California Vehicle Code 230
• bus: is a ny vehicle, including a trailer bus, designed, used, or maintained for carrying more than 15 persons including the driver. See California Vehicle Code 233
• camp trailer: is a vehicle designed to be used on a highway, capable of human habitation for camping or recreational purposes, that does not exceed 16 feet in overall length from the foremost point of the trailer hitch to the rear extremity of the trailer body and does not exceed 96 inches in width and includes any tent trailer. See California Vehicle Code 242
• driveaway-towaway operation: is a ny operation in which any motor vehicle or combination of motor vehicles coupled together constitutes the commodity being transported, when one or more sets of wheels of any such motor vehicle or motor vehicles are on the roadway, and when one or more of such vehicles are being operated under a manufacturer's, dealer's, or transporter's special plates. See California Vehicle Code 303
• motor vehicle: includes a recreational vehicle as that term is defined in subdivision (a) of §. See California Vehicle Code 415
• motorcycle: is a motor vehicle having a seat or saddle for the use of the rider, designed to travel on not more than three wheels in contact with the ground. See California Vehicle Code 400
• passenger vehicle: is a ny motor vehicle, other than a motortruck, truck tractor, or a bus, as defined in Section 233, and used or maintained for the transportation of persons. See California Vehicle Code 465
• Road: means any existing vehicle route established before January 1, 1979, with significant evidence of prior regular travel by vehicles subject to registration pursuant to Article 1 (commencing with Section 4000) of Chapter 1 of Division 3. See California Vehicle Code 527
• semitrailer: is a vehicle designed for carrying persons or property, used in conjunction with a motor vehicle, and so constructed that some part of its weight and that of its load rests upon, or is carried by, another vehicle. See California Vehicle Code 550
• tow dolly: is a vehicle towed by a motor vehicle and designed and used exclusively to transport another motor vehicle and upon which the front or rear wheels of the towed motor vehicle are mounted, while the other wheels of the towed motor vehicle remain in contact with the ground. See California Vehicle Code 617
• 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. See California Vehicle Code 630
• truck tractor: is a motor vehicle designed and used primarily for drawing other vehicles and not so constructed as to carry a load, other than a part of the weight of the vehicle and the load so drawn. See California Vehicle Code 655
• vehicle: is a device by which any person or property may be propelled, moved, or drawn upon a highway, excepting a device moved exclusively by human power or used exclusively upon stationary rails or tracks. See California Vehicle Code 670