Research on safety driving assistant system of expressway on-ramp merging area based on wireless network communication

On-ramp merging areas of expressway are in general accident-prone sections. Traditional vehicle safety driving assistant system is not satisfying since normal sensors such as vision, lidar, radar often do not perform well as expected. Motivated by this, this paper proposes a new method using V2V (vehicle to vehicle) wireless network communication, GPS and digital map etc. And, the acceleration risk criterion of the car-following model between the preceding car and the host car is exploited as safety evaluation. The new method can also be applied for special conditions such as cross road, extreme weather condition, and rural roads, etc. Simple road experiments are conducted and the results show that the new method performs well when addressing the problems usual sensors fail.