Our country's electric tricycle size

Green, yellow ...... almost every courier companies using a electric cargo tricycles to address urban freight logistics problems last kilometer, and is equipped with a unified image. In actual operation, the electric three are indeed express delivery brings good, the street did not have to worry about parking, do not worry about the small courtyard entrance doors, but the urban traffic to express tricycle tolerance is limited, first This is related to security. So just to express our country's electric tricycle size limit load mass, maximum speed, braking distance, the mechanical properties of a number of indicators are clearly defined.