A Model Tree-Based Vehicle Emission Model at Freeway Toll Plazas

Yueru Xu, Chao Wang, Yuan Zheng, Zhuoqun Sun and Zhirui Ye
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Yueru Xu: Jiangsu Key Laboratory of Urban ITS, Southeast University, Nanjing 210096, China
Chao Wang: Jiangsu Key Laboratory of Urban ITS, Southeast University, Nanjing 210096, China
Yuan Zheng: School of Transportation, Southeast University, Nanjing 210096, China
Zhuoqun Sun: Jiangsu Key Laboratory of Urban ITS, Southeast University, Nanjing 210096, China
Zhirui Ye: Jiangsu Key Laboratory of Urban ITS, Southeast University, Nanjing 210096, China

Sustainability, 2020, vol. 12, issue 21, 1-15

Abstract: With the increased concern over sustainable development, many efforts have been made to alleviate air quality deterioration. Freeway toll plazas can cause serious pollution, due to the increased emissions caused by stop-and-go operations. Different toll collections and different fuel types obviously influence the vehicle emissions at freeway toll plazas. Therefore, this paper proposes a model tree-based vehicle emission model by considering these factors. On-road emissions data and vehicle operation data were obtained from two different freeway toll plazas. The statistical analysis indicates that different methods of toll collection and fuel types have significant impacts on vehicle emissions at freeway toll plazas. The performance of the proposed model was compared with a polynomial regression method. Based on the results, the mean absolute percentage error (MAPE), root mean squared error (RMSE), and mean absolute error (MAE) of the proposed model were all smaller, while the R -squared value increased from 0.714 to 0.833. Finally, the variations of vehicle emissions at different locations of freeway toll plazas were calculated and shown in heat maps. The results of this study can help better estimate the vehicle emissions and give advice to the development of electronic toll collection (ETC) lanes and relevant policies at freeway toll plazas.

Keywords: vehicle emissions; freeway toll plaza; vehicle specific power; model tree (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2020
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