Survey on low delay message propagation in vehicular ad hoc network

The message propagation with low delay becomes a fundamental challenge in VANET. The vehicle Ad hoc networks are a very appealing solution for many safety applications like assistance driver, warning about collision of vehicle, warning of distance between vehicles, cooperation during driving and control for cruise cooperation. To operate these application the vehicles are fitted with those equipments which permit them to exchange information with vehicle to vehicle (V2V) and vehicle to infrastructural (V2I). We have to consider delay and reliability to avoid miscommunication or no commutation between vehicles. We compare different protocols and techniques to make message propagation with low delay.