关键词: 交通工程, 行人流仿真, 格子气模型, 信号控制, 行人过街, 行人延误

Abstract:

Based on the lattice gas model, this paper improved the lattice gas model considering both the interference factors of opposing pedestrians and the impact of synclastic pedestrian due to different speed. It proposed a lattice gas simulation model of pedestrian crossing and compiled simulation software, combining with pedestrian crossing characteristics at countdown signalised crosswalk. The study carried out the pedestrian crossing simulation at different speed pedestrian ratio, different bi-direction pedestrian ratio and different specifications crosswalks by the simulation software. The results indicate that slow pedestrians will increase the overall delay of pedestrians and the pedestrian arrival rate higher, the slow pedestrian impact greater. When pedestrian arrival rate is low, the greater the gap between bi-direction pedestrian, the smaller the delay is. When the pedestrian arrival rate exceeds a certain value, the greater the gap between bi-direction pedestrian, the greater the delay is. The wider the crosswalk, the smaller pedestrian delay is. And the longer the crosswalk, pedestrian delay increased significantly. When other factors are the same, changing the pedestrian phase, delay reduced significantly with the increase of time in a certain range. And over this range increasing pedestrian phase time has little effect on delay.

Key words: traffic engineering, pedestrian flow simulation, lattice gas model, signal control, pedestrian crossing, pedestrian delay