Stopping accidents before they happen: Perceiving lane-level moving vehicle danger regions to warn surrounding drivers and pedestrians

Perceiving the location of dangerous moving vehicles and broadcasting this information to vehicles nearby are essential to achieve active safety in the internet of vehicles (iov). to address this issue,we implement a real-time high-precision lane-level danger region service for moving vehicles. a traditional service depends on static geofencing and fails to deal with dynamic vehicles. to overcome this defect,we devised a new type of iov service that manages to track dangerous moving vehicles in real time and recognize their danger regions quickly and accurately. next,we designed algorithms to distinguish the vehicles in danger regions and broadcast the information to these vehicles. our system can simultaneously manipulate a mass of danger regions for various dangerous vehicles and broadcast this information to surrounding vehicles at a large scale. this new system was tested in shanghai,guangzhou,wuhan,and other cities; the data analysis is presented in this paper as well. © 2016 chi guo et al.