Automation of Traffic Lights through IoT

The level of pollution at traffic lights has increased with the increased vehicle use, which results in harmful effects on humans those who are exposed to it directly. Pollution monitoring using internet of things (IoT) over traffic lights is proposed to monitor and check live air quality as well as temperature and humidity levels at the traffic signals through IoT. This proposed system uses gas sensor and temperature sensors to sense the presence of harmful gases like carbon monoxide, carbon dioxide, smoke, ammonia and humidity in the atmosphere. This information is constantly transmitted to the microcontroller and same is reported to the online server through Wi-Fi module. Based on this the traffic lights ON/OFF timing rates are automatically modified. This proposed method controls the pollution and temperature at traffic lights automatically.