Intersection Vehicle Driving Assistance System Based on Vehicle-to-infrastructure Communication

A vehicle driving assistance system based on vehicle-to-infrastructure(V2I) communication was developed for improving driving safety in intersections.Based on the system hierarchical and modularized structure design method,a novel vehicle positioning approach was presented based on radio frequency identification(RFID),GPS and velocity information.Current traffic light phase and its timing could be collected by V2I technology.A velocity threshold algorithm reflecting driver's decelerating characteristics was proposed to assess dangerous level based on vehicle's movement state,vehicle position and traffic light phase.Under dangerous situation,the system would warn the driver or decelerate the vehicle automatically with an adaptive brake control method.An experimental platform for real vehicle was established,and multiple functions of the system were verified through field experiments.The results indicate that the proposed assistance system and control strategy can promptly assess the driving dangerous level and provide the driver with timely warning and brake assistance,which can significantly enhance driving safety in intersections.