The project aims in designing an efficient automatic wireless vehicle speed control in low-speed zones using and RF communication. The modules in the project are: RF transmitter and receiver modules for establishing wireless communication, DC motors for the vehicle movement controller. The status of the project will display on LCD display. The controlling device of the whole system is an Arduino UNO Microcontroller to which RF receiver module; DC motors are interfaced through a MOSFET. Whenever the vehicle enters into a low-speed zone, the data from RF transmitter of low-speed zone will be received by the vehicle system. The Microcontroller in the vehicle system automatically slows down the speed to the speed limit of that zone. Arduino Microcontroller will be generating the PWM sign to the MOSFET to reduce the vehicle speed based on speed limit of that zone. The Arduino Microcontroller checks the data with the program embedded in it and performs appropriate actions on the electric motors. The Microcontroller is programmed using Embedded C language.    

The objectives of the project include:

1. Automatic speed control of vehicles in smart zones.
2. Wireless transmission using RF.

    The major building blocks of this project are:  

1. Battery Power Supply
2. TWO RF Transmitters.
3. RF Receiver.
4. Arduino UNO Micro Controller
5. DC motor with MOSFET driver
6. LCD display.

    Software’s used:

1. Embedded C programming.
2. Arduino IDE programmer for dumping code into Micro controller.
3. Express SCH for Circuit design.

      Block diagram:                  

video: