Vehicular ad hoc network (VANET) ,is a technology that uses moves cars as nodes in a network to create a mobile network .VANET turns every participating car into a wireless router or node, allowing cars approximately 100 to 300 metres of each other to connect and,in turn,create a network with a wide range As cars falls out of the signal range and drop out of the network ,other cars can join in,connecting vehicles to one another so that a WSN.In our project we create a VANET for vehicle accident identifying process.Here we have three units.We have both vehicle to vehicle communication and vehicle to road side communication.V2V is done for accident information is transfer to the ambulance from vehicle directly.V2R is done for ambulance to traffic light.Here we use ZIGBEE as a communication medium for VANET.Because it have low interference,at a time it can communicate with 255 devices.