DSRC-based end of queue warning system

The rapid development of the Dedicated Short Range Communications (DSRC) has provide a good opportunity for solving the increasingly outstanding traffic safety problems. One noteworthy function enabled by DSRC is the end of queue (EOQ) collision warning system. However, the reliability of the system is easily affected by some easily ignorable factors like DSRC penetration rate, DSRC communication range and positioning accuracy. In this paper, an EOQ warning system is proposed on a highway environment. The system is established using only velocity-related information combined with real highway data, which produce a warning threshold. For the proposed warning mechanism, we also build an evaluation model considering relevant influential factors. By means of simulation validation under different road conditions, an effective EOQ warning system can be issued in time when related parameters meet corresponding requirements.