Abstract: In china, especially in small and medium-sized cities, mixed non-motor bicycle flow mainly consists of electric bicycles and electro-tricycles. According to the difference in the actual size and driving characteristics of the two kinds of fransportation tools, a mixed non-motor vehicles cellular automata model for mulfiple lans is established considering the velocity effect based on STNS (Symmetric Two-lane NaSch) model. The basic diagrams are obtained under different proportion of electro-tricycle, braking probability and lane-changing probability through computer numerical simulation. The results show that the phenomenon of segregation appeares with the increase of the electric tricycle proportion, and mixed non-motor vehicle traffic capacity and the decreased average velocity. The electric tricycle reduction behavior are more likely to cause congestion with the increase of probability of slowing down. The lane-changing behavior probability has little effect on non motor vehicle mixed traffic flow. With the increase of the lane occupancy, the electric bicycle lane-changing rate curve quickly decreaces to 0, while the electro-tricycle lane-changing rate curve presented increases firstly then decreases.

Key words: traffic engineering, cellular automata, electro-tricycle, electric bicycle, lane-changing rate