Electric tricycles can be divided into household type, freight type and factory type according to their uses. Because of different uses, the technical standards adopted are different Most household electric tricycles use side wheel motors and an external frame (the frame is outside the wheel). The car with this structure has no big axle, light load, generally about 200KG, the motor is generally 350-500W, and the battery is 12V20AH, which is suitable for household and elderly walking tools. There are also middle mounted motors with large axles (the large axles are also called rear axles and rear beams, which are the axles connecting the rear two wheels of tricycles, and are important components of tricycles). This kind of vehicle has good stability. The middle mounted motors drive the rear two wheels at the same time, which makes the starting stable. However, this kind of tricycle is generally expensive

 Seat cushion, handrail (or strap) and pedal shall be set for the passenger seat of the main vehicle of two wheel motorcycle and side three wheel motorcycle.

The hot surfaces of tricycles that may be touched during normal startup and operation according to the product instructions and whose temperature is greater than 80 ℃ measured at an ambient temperature of (23 ± 3) ℃ shall be equipped with permanently connected or fixed protective devices or baffles (which cannot be removed without tools).

1、The traction battery of electric vehicle shall not be placed in the cargo box or passenger compartment; However, when it has to be placed in the cargo box or the passenger compartment due to the restriction of the structure, corresponding devices must be set to isolate it safely (when placed in the cargo box, it should be ensured that the power storage battery and the electrical circuit will not be squeezed by the goods) and ensure that it is in a good ventilation state with the outside world. If necessary, an alarm device for excessive hydrogen content should be set.

2、 The electric shock protection requirements of the electric vehicle when it is not connected to the external power supply shall comply with relevant  cargo regulations.

3、The exhaust pipe orifice of motor vehicle engine shall not point to the right side of the vehicle cargo body.