Power-based motor-vehicles model emission of air pollutants from Chalongrat Expressway compared to road ground level by using power-based motor-vehicle model

Abstract

The objective ofthis research was to investigate the emission ofair pollutants from vehicles traveling on the expressway and ground-level roads, e.g. Carbon Monoxide (CO), Hydrocarbons (HC), Nitrogen Oxides (NOx) and Carbon Dioxide (CO2). The Chalongrat Expressway and ground-level roads (Sukhaphiban 5 Road RAMA IX Road) were selected as studies areas. The results showed vehicles using the Chalongrat Expressway can have average speed higher than the ground-level roads was approximately 97.25. The fuel consumption rate of vehicles using the Chalongrat Expressway was lower than those using the ground-level roads for 31.29 percent in aggregate. In addition, one vehicle using the Chalongrat Expressway can reduce the emission of pollutants; namely, CO2, HC, NO2 and CO for 25.17 percent because driving on the expressway can be on high speed and the traffic on the expressway was notin the Stop-and-Gocondition like theground-level roads where the vehicles were often speeded up or stopped, which stirred the engine to emit much air pollutants. From the calculation of expenses ineradicating air pollutants ,driving on the Chalongrat Expressway could,on average,reducethe expenses in eradicating airpollutants, e.g. NOx, CO, HC and CO2 for Baht 2.83 perkilometer pervehicle.