• Chidambar P M
• Chinmay S
• D N Mithun
• Karthik D
• Dr.Devika B

This IoT-based project aims to prevent chain accidents and reduce high-beam glare using ESP32 microcontrollers. Ultrasonic sensors detect obstacles and nearby vehicles to trigger automatic braking. ADXL accelerometers sense collisions, stopping the vehicle and sending alerts via Zigbee to nearby vehicles. Zigbee enables real-time vehicle-to-vehicle communication for prompt responses. LDR sensors detect high-beam glare and automatically switch to low beam using a voltage regulator. A central hub sends accident alerts to emergency contacts through Telegram for rapid emergency response.

ESP32 Microcontroller, Arduino IDE, Power Supply, LDR Sensor, UV Sensor, Voltage Regulator, Relay, DC Motor, Motor Driver, LCD Display, Embedded C.

"CHAIN ACCIDENT PREVENTION BY APPLYING AUTOMATIC BRAKE ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.12, Issue 12, page no.b184-b190, December-2025, Available :http://www.jetir.org/papers/JETIR2512127.pdf

"CHAIN ACCIDENT PREVENTION BY APPLYING AUTOMATIC BRAKE ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.12, Issue 12, page no. ppb184-b190, December-2025, Available at : http://www.jetir.org/papers/JETIR2512127.pdf