In recent years there has been an exponential increase in the number of automobiles available to the consumers. Due to high density of vehicles, the potential threats and road accidents are increasing. The vehicles itself designed in such a way to provide lot of services for users in transit such as toll, infotainment and gaming. The vehicle can able to communicate with other vehicle in order to provide updates about different road situations and dangerous conditions, which results in saving time and lives. This new emerging technology called Vehicular Network (VANET) helps in achieving this communication. The main aim of this work is to develop the prototype for the prevention of chain collisions of vehicles on highways, by sending an indication of collision of the collided vehicle to the preceding vehicles. VANET provides the communication between vehicles and road-side units (RSU) with an aim of providing efficient and safe transportation. The ultrasonic sensor interfaced with the on board unit (OBU) has a controller which detects the collision of the target vehicle and sends the information to the OBU of preceding vehicle. This is accomplished by employing NodeMCUs. Both the NodeMCUs uses user datagram protocol (UDP) to communicate with each other. The RSU provide a hotspot for both NodeMCUs to connect. The present format is a prototype model that can adapted with inputs from different sensors to provide more reliable data to the preceding. © 2019 IEEE.