Vehicular CO Emission Prediction Using Support Vector Regression Model and GIS

Omer Saud Azeez, Biswajeet Pradhan and Helmi Z. M. Shafri
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Omer Saud Azeez: Department of Civil Engineering, Faculty of Engineering, University Putra Malaysia, 43400 Serdang, Malaysia
Biswajeet Pradhan: RCentre for Advanced Modelling and Geospatial Information Systems (CAMGIS), School of Information, Systems & Modelling (ISM), Faculty of Engineering and Information Technology, University of Technology Sydney, Ultimo, NSW 2007, Australia
Helmi Z. M. Shafri: Department of Civil Engineering, Faculty of Engineering, University Putra Malaysia, 43400 Serdang, Malaysia

Sustainability, 2018, vol. 10, issue 10, 1-18

Abstract: Transportation infrastructures play a significant role in the economy as they provide accessibility services to people. Infrastructures such as highways, road networks, and toll plazas are rapidly growing based on changes in transportation modes, which consequently create congestions near toll plaza areas and intersections. These congestions exert negative impacts on human health and the environment because vehicular emissions are considered as the main source of air pollution in urban areas and can cause respiratory and cardiovascular diseases and cancer. In this study, we developed a hybrid model based on the integration of three models, correlation-based feature selection (CFS), support vector regression (SVR), and GIS, to predict vehicular emissions at specific times and locations on roads at microscale levels in an urban areas of Kuala Lumpur, Malaysia. The proposed model comprises three simulation steps: first, the selection of the best predictors based on CFS; second, the prediction of vehicular carbon monoxide (CO) emissions using SVR; and third, the spatial simulation based on maps by using GIS. The proposed model was developed with seven road traffic CO predictors selected via CFS (sum of vehicles, sum of heavy vehicles, heavy vehicle ratio, sum of motorbikes, temperature, wind speed, and elevation). Spatial prediction was conducted based on GIS modelling. The vehicular CO emissions were measured continuously at 15 min intervals (recording 15 min averages) during weekends and weekdays twice per day (daytime, evening-time). The model’s results achieved a validation accuracy of 80.6%, correlation coefficient of 0.9734, mean absolute error of 1.3172 ppm and root mean square error of 2.156 ppm. In addition, the most appropriate parameters of the prediction model were selected based on the CFS model. Overall, the proposed model is a promising tool for traffic CO assessment on roads.

Keywords: vehicular emission; CO; GIS; SVR; remote sensing (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (10)

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