Abstract: This study focuses on the speed controlling technique which involves the transmission of speed controlling signals to the vehicle in which receiver of these signals is installed as the inappropriate speed is a significant factor in serious road accidents. Road safety authorities around the world devote considerable resources to addressing the speeding problem particularly compliance with speed limits. In the system the speed is automatically reduced to the speed specified in a particular area and also an information system is also incorporated which display information in the vehicle about the route. Microcontroller PIC16F876A which is RISC based controller it has 35 set of commands set. Has various peripheral inbuilt such as USART, TIMER, ADC, SPI and many more features.
Keywords: ISA, Microcontroller PIC16F876A, PID Loop, RF Module, USART.