Automatic Speed Control System in Vehicles Using VANET

Intelligent Transport System is the need of the hour technology which paves the easy way for smart city implementation in the future. As much as the road rules and safety regulations are formulated, there is still no assurance that it will all be followed by everyone. Road accidents are increasing every day and mortality is reaching hundreds of thousands around a year. So, it is necessary to implement technologies to prevent them from happening. Vehicular ad hoc network commonly known as the VANET technology can be used at several advantages. Controlling over speed vehicles is the main objective of this paper. It can be done by sending the speed limit data over the network to the engine control unit (ECU) in the vehicle. Taking this data, ECU controls the speed of the vehicle according to the speed limit in that region. Single broadcasting of the data from a central control location is enough to trigger the vehicle to vehicle communication. A vehicle first receiving the signal passes it to the nearby vehicles and the chain goes on. VANET restricts the disadvantage of signals being lost due to the speeding of vehicles. This approach can easily control the vehicle speed automatically. V2V transmission is efficient than prior methods like GPS transceiver systems, which needs transceivers along the road at regular intervals. This signal might get lost if the vehicle is moving at high speed. With VANET, these disadvantages are overruled.