According to the classification of Motor Vehicle Structure Terms, motorcycles can be divided into the following categories:

Motorcycle: A motorcycle with two wheels.

Tricycle: a motorcycle equipped with two rear wheels symmetrically distributed with the front wheels and with only the driver's seat.

Three wheel passenger motorcycle: a motorcycle with passenger carrying device equipped with two rear wheels symmetrically distributed with the front wheels.

Three wheeled truck motorcycle: a motorcycle with a loading device equipped with two rear wheels symmetrically distributed with the front wheels.

Side tricycle: A motorcycle with a side car mounted on one side of a two wheeled motorcycle.

3  wheels vehicle

The  dayang factory occupies an area of ​​78,775 square meters, with a total construction area of ​​75,866 square meters, and currently employs 300 people, including 60 engineering and technical personnel; the industry’s leading modern industrial base. It costs hundreds of millions of yuan to build intelligent and flexible products production line 3  wheels vehicle.

The production equipment is complete, and the inspection equipment meets the production requirements, including 3 frame welding lines, 8 carriage welding lines, and 2 cab welding lines; 3 vehicle assembly lines, 2 vehicle inspection lines, and automobile paint lines 2 pieces，3  wheels vehicle。

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.

 Noise control of motor vehicles

1 、Stationary noise of vehicles (except tricycles and low-speed trucks) shall comply with the provisions of GB16170.

2 、The noise level near the driver's ear of automobiles (except three wheelers automobiles and low-speed trucks equipped with single cylinder diesel engines) shall be less than or equal to 90dB (A). See Appendix F for the inspection method.

3、 The noise level near the driver's ear of three wheelers tricycle and low-speed truck equipped with single cylinder diesel engine shall comply with the provisions of three wheelers relevant standards.

4 、The noise inside the three wheelers bus shall be no more than 79dB (A), and the inspection method shall be in accordance with GB/T 1496-1979.