Intersection collision warning system has been widely studied with the progress in wireless communication technology and positioning devices, which are now increasingly available on smart phones. In this paper, we present an Intersection Collision Warning (ICW) system using Wi-Fi smart phones with built-in GPS receivers for vehicular ad-hoc networks. In the system, smart phones first retrieve safety-related information, i.e., location, moving direction and velocity, via onboard GPS receivers and then periodically exchange the information using standard wireless communication between vehicles to compute the probability of potential collision and issue warnings when necessary. Simulation results show that our ICW system can significantly reduce the probability of collisions.
Another work, called Intersection Collision Warning, studies warning message dissemination using smartphones with built-in GPS; in particular, it uses the WiFi networks in smartphones to retrieve safetyrelated information like location, moving direction, and velocity REF .
An Intersection Collision Warning System Using Wi-Fi Smartphones in VANET
2011 IEEE Global Telecommunications Conference - GLOBECOM 2011
2011 IEEE Global Telecommunications Conference - GLOBECOM 2011
Computer Science