• Lakshit Suthar
• Indra Kumar
• Chandra Shekhar Mali
• Prof. Pradeep C. Garg
• Sunil Sharma

This research presents the design and implementation of a vehicle speed limiter system using Arduino UNO. The system is intended to enhance road safety by monitoring and controlling vehicle speed in predefined zones such as schools, hospitals, or speed-restricted highways. Components used include an Arduino UNO microcontroller, L293D motor driver, Ultra Sonic sensor, RX-TX wireless transmitter/receiver modules, a 16x2 LCD display, and a buzzer. The system uses an IR sensor to detect the vehicle and a transmitter to send speed limit data to the receiver onboard the vehicle. Based on the received data, the Arduino adjusts motor speed via the motor driver and notifies the driver through a display and buzzer. The project proposed allows communication between vehicles and road signs. Allowing communication between the road signs and vehicles is used to convey important information to regulate traffic flow. Such information would be speed limit of the road, weather conditions, congested traffic This is the idea behind an area-based speed control of vehicles using RF transmitter and receiver modules. The transmitter is installed in defined areas where their speed limit of the vehicle has to be controlled. The transmitter will transmit a signal and the receiver has to be installed within the vehicle for speed controlling purposes. Whenever the vehicle enters the mapped area, the speed of the vehicle is decreased to cutoff speed and kept constant until the vehicle leaves that particular area. After that, the vehicle can be controlled by the driver based on standard traffic rules. This is how the project aims at Area based speed controlling system targeting the importance of road safety in the defined areas and alarm messages in case of emergencies. As sustainable solutions for this problem have not been identified yet, this system might be the answer.

Arduino UNO, Motor Driver, RX-TX Transmitter Receiver, Sensor, Lcd Display, Vehicle, Detector.

"Vehicle Speed Control System", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.12, Issue 6, page no.12-17, June-2025, Available :http://www.jetir.org/papers/JETIRGW06002.pdf

"Vehicle Speed Control System", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.12, Issue 6, page no. pp12-17, June-2025, Available at : http://www.jetir.org/papers/JETIRGW06002.pdf