This document describes an accident detection and monitoring system using IoT. The system uses sensors like a vibration sensor, MEMS sensor, heartbeat sensor and gas sensor to detect if an accident has occurred. If an accident is detected, the Arduino mega controller sends an alert message via GSM and GPS to notify emergency services. The GPS location is also sent so emergency services know the exact location of the accident. Additional sensors measure oxygen levels and heartbeat of victims. All sensor data is sent to a server where it can be monitored via a webpage. This system allows for quick emergency response and monitoring of accident victims to help save lives.