信号控制交叉口行人过街行为虚拟实验

以交通系统微观仿真模型VISSIM为基础,基于虚拟现实仿真理论开发了行人过街行为虚拟实验系统(PCBVRS).在上海市的中原社区和同济大学内招募了29名有代表性的出行者,以上海市大连路与飞虹路交叉口为对象,进行了行人过街行为虚拟实验,获得了230份行人过街样本数据.运用实验科学中的信度与效度理论,将实验数据与实测数据进行了对比分析.结果表明,PCBVRS可以有效地模拟实际场景中的行人过街行为;PCBVRS满足VR(虚拟现实)系统沉浸性、交互性以及现实感等实验特点,且造价便宜,易于携带.经过进一步的研究改进,将来可作为提高行人过街安全意识的培训工具.

Virtual Reality Experiment on Pedestrian Crossing Behaviors At Signalized Intersections

In most Chinese cities, pedestrian illegal crossing is recognized to be the main cause of traffic disorder, safety deficient and low traffic efficiency at intersections. The development of Virtual Reality (VR) technology provides a tool to analyze psycho-physical aspect of pedestrian's crossing behavior. In this paper, a Pedestrian Crossing Behavior Virtual Reality System (PCBVRS) was developed on the micro traffic simulation Software VISSIM and VR technology. 29 typical travelers from Zhongyuan Community and Tongji University are recruited and 230 crossing samples are gotten using PCBVRS in Shanghai. Reliability and validity theory in experimental science is used to comparatively analyze the data obtained respectively from field survey and PCBVRS experiment, which proves that PCBVRS can effectively catch pedestrian's crossing behavior. The characteristics of VR system, such as immersion, interaction and reality was satisfied by PCBVRS, and Apart from that, PCBVRS has the virtue of low building cost, high portability. It can be acted as a training tool to promote safety awareness during pedestrian crossing after further improvement.