Vehicular Ad-hoc Network (VANET) belong to a sub category of traditional Mobile Ad-hoc Network (MANET). The main feature of the VANET is that mobile nodes are vehicles endowed with sophisticated “on-board” equipment travelling on constrained paths (i.e. roads and lanes) and communicating each other for message exchange via Vehicle-to-Vechicle (V2V) communicating protocols as well as between vehicles and fixed road-side access points(wireless and cellular network infrastructure), in case of vehicle-to-infrastructure (V2I) communications.
Future networked vehicles represent the future convergence of computers, communication infrastructure and automobile. Vehicular communication is considered as an enabler for driver-less cars of the future. Presently, there is a strong need to enable vehicular communication for application such as safety messaging, traffic and congestion and general purpose internet access.
Visible light communication (VLC) can provide a valid technology for communication in VANET. The use of the visible spectrum provides service in densities exceeding femtocells to form wireless access. It represents a viable alternative that achieve high data rate while also providing illumination. This configuration minimizes the packet less collision due to line of sight (LOS) of light and promises to elevate the wireless bottleneck that exists when there is a high density of rich-media devices seeking to receive data from the wired network. Possible application of VLC impact the quality of life, including the control of auto /traffic signaling for safety and enabling communications where high noise interferes with WiFi.