The document describes a system for detecting carbon levels in vehicle emissions using IoT sensors to prevent air pollution. The system uses sensors to measure the levels of carbon monoxide, carbon dioxide, methane, and other gases released by vehicles. If the gas levels exceed thresholds, the vehicle will be locked and can only be unlocked by an authorized official after servicing. The system notifies users when gas levels are high to service their vehicle before it gets locked. It aims to control air pollution and its impacts on global warming and human health. The architecture uses sensors connected to an ESP8266 controller over Wi-Fi to an Android app and database for monitoring and control.