Abstract: A vehicle safety control system in the merging zones of highway and freeway is established based on vehicleinfrastructure integration (VII).First, the present safety level of merging zones in China is reviewed, and the requirements of a vehicle safety control system are emphasized.Based on the analysis of system framework and functions, three subsystems including the traffic information collection unit of side outline, the side outline control unit and the warning and guiding unit with the safe driving signal are discussed, and then the system’s logical and physical structures are designed in detail.It then tests and verifies the feasibility and validity of the traffic video detection algorithm included in the system on Matlab/Simulink platform.Using the video processing technology based on the OpenCV and the wireless communication technology with Socket protocol mechanism, the experiment under the laboratory conditions is conducted to realize the integral functions of the system.The system establishes a firm foundation to promote the safety conditions of merging zones in China, and it proposes a valuable reference model for the design of traffic safety facilities.

Key words: intelligent transportation, vehicle safety control system, vehicle infrastructure integration technology, merging zones, video image processing tehcnology, wireless communication technology

摘要： 建立一个基于车路协同的高速/快速路匝道合流区行车安全控制系统，首先以国内的高速/快速路合流区的安全现状为切入点，分析行车安全控制的系统需求，在对系统框架、功能分析的基础上，就系统的路侧交通信息采集单元、路基控制单元、路侧安全行车信号提示与引导单元的逻辑和物理结构进行详细论述.在此基础上，利用Matlab/Simulink平台对系统的交通视频检测算法进行验证，并利用基于OpenCV的视频图像处理技术与基于Socket机制的无线通信技术实现系统在实验环境下整体功能实验，实现了安全行车信号的提示与引导作用，为高速/快速路合流区交通安全设施的功能设计提供一种参考范例.

关键词: 智能交通, 行车安全控制系统, 车路协同技术, 行车合流区域, 视频检测技术, 无线通信技术