1. Tricycle: A small car with three wheels and simple mechanical transmission, the rear compartment or flat plate, used for manned or loaded, the tricycle is divided into two parts before and after, the front has a steering wheel, handlebar, bell, brakes, pedal and car seat, with the chain to drive the rear of the wheel rotation, tricycle rear main compartment.
2. Tricycle is a large category including three-wheeled motorcycle, the main categories are: Human tricycle, electric tricycle, motorized tricycle.
3. Three-wheeled motorcycle: a motorcycle with three wheels, three wheels, a carriage or a flat plate, used for manned or loaded.
4. Three-wheeled motorcycle belongs to the motor tricycle, according to the "Motor vehicle driver's license" requirements and the use of the second chapter seventh of the first section: Driving motor vehicles, should obtain a motor vehicle driver's license, and tricycle motorcycle belongs to Class D driver's license.