China's rapid economic growth has caused increasingly serious traffic congestion toll station, electronic toll collection (ETC) can greatly improve the rate of toll lane.This paper introduces the electronic toll collection (ETC) dedicated short range communication (DSRC) began in important equipment of the working principle of OBE, focuses on the analysis of the dedicated short-range communications (DSRC) active and passive working mode two kinds of work mode, the research expounds the OBE dedicated short range communication (DSRC) compatibility management in passive mode , the realization in RSE.%我国经济的快速增长引发日益严重的收费站车辆拥堵问题，电子收费（ETC）可以极大地提高收费车道通过率。文章从介绍电子收费（ETC）专用短程通信（DSRC）中重要设备OBE工作原理开始，着重分析了专用短程通信（DSRC）主动和被动2种工作方式，研究阐述了OBE专用短程通信（DSRC）主被动工作方式在RSE上实现的兼容性管理。
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