California Code, Vehicle Code - VEH § 245

A “carry-all” is that type of earth-moving equipment which is not self-propelled but which is designed for use behind tractors or other motive power and which is self-loading by means of a cutting blade which is lowered at an angle to dig into the ground.  The term includes, but is not limited to, such types of vehicles as carry the trade names of LaPlant-Choate, LeTourneau, and Be Ge.