信号控制人行横道格子气行人仿真模型

以格子气模型为基础，既考虑对向行人的干扰因素，同时考虑了本向行人由于 速度差异造成的影响，改进了格子气模型，结合信号控制有倒计时人行横道行人过街特 性，提出了新的行人过街格子气仿真模型，并将其编成仿真软件.用该软件对不同快中慢 行人比、不同对向行人比、不同规格人行横道的行人过街进行了仿真.结果表明，慢的行人 会增加行人总体延误，并且行人到达率越大，速度慢的行人影响越大；行人到达率较小 时，对向行人比差距越大延误越小，当行人到达率超过一定值时，对向行人比差距越大延 误反而越大；人行横道宽度越宽，行人延误越小，人行横道越长，行人延误增加越明显.在 其他因素相同时，改变行人相位时间，在一定范围内随时间的增加，延误降低明显，此后 增加行人相位时间对降低延误影响不大.

Lattice Gas Simulation Model of Pedestrian at Signalised Crosswalks

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.