Road accidents remain one of the major causes of fatalities worldwide, largely due to delayed emergency response and lack of real-time accident information. This paper presents the design and implementation of a Vehicle Accident Detection and Monitoring System (VADS) that enables automatic accident detection and immediate alert transmission to emergency contacts and authorities. The system integrates multiple sensors such as an accelerometer, vibration sensor, impact force sensor, tilt angle sensor, and GPS module to continuously monitor vehicle dynamics. When abnormal parameters such as high G-force, sudden tilt, or strong impact are detected, the system identifies the event as an accident and automatically sends the vehicle’s exact location and status via a communication module. This reduces response time, improves rescue efficiency, and enhances road safety. The proposed system is cost-effective, reliable, and suitable for real-time deployment in vehicles.

Keywords: Accident Detection, Vehicle Monitoring, Accelerometer, GPS Tracking, Emergency Alert System, IoT, Road Safety, Real-time Monitoring