An efficient model to limit the vehicle speed and horn sound in sensitive public zone with encrypted wireless communication

Road accident nowadays has become a national catastrophe for over populated developing countries like Bangladesh. Enormous innocent lives are taken way ruthlessly every day due to road accident. One of the main cause of accident in the sensitive public zones like school, college, hospitals etc. and sharp turning points is the over speed of vehicles avoiding the speed limit indicated in the traffic sign board. Motorists endanger the lives of passengers, pedestrians and fellow motorists not limiting their vehicle speed in these sensitive public zones. This paper paves a system to limit the speed of the vehicles in sensitive public zones without any interference of the drivers where controls are taken automatically by the use of a wireless local area network. Any motor vehicle entering the network zone cannot overcome the speed limit defined by the system. But driver can change the speed of vehicle within that speed limit. The system can also control the horn of the vehicles at certain important and restricted places or locations such as hospitals and school zones to prevent unnecessary noise generation. Besides, the system is capable of detecting any obstacle in front of the vehicles by using an ultrasonic sensor and stops the vehicle automatically if any obstacle is detected to avoid collision. The main objective of the proposed system is to operate the vehicles in a safe speed at critical zones minimizing the possible risk of unwitting accidents and casualties.