Real time vehicular emissions

Real-time sensing devices, namely MQ-7, MQ-137, and MG-811, were employed to measure concentrations of gases. These sensors were programmed on the Arduino motherboard. The study selected segments along National Highway 5 (Pakistan) that experience both congested and free-flow traffic conditions. The real-time emissions of Ammonia (NH3), Carbon monoxide (CO), and Carbon dioxide (CO2) were detected by placing the sensing device at the exhaust tailpipe of vehicles. The vehicles were operated on gasoline. There is data in the same file regarding travel time index.