中国物理B ›› 2024, Vol. 33 ›› Issue (6): 64501-064501.doi: 10.1088/1674-1056/ad2608
Effect of speed humps on instantaneous traffic emissions in a microscopic model with limited deceleration capacity
Yu-Chen Hu(胡宇晨)1, Qi-Lang Li(李启朗)1,†, Jun Liu(刘军)1, Jun-Xia Wang(王君霞)2, and Bing-Hong Wang(汪秉宏)3
- 1 School of Mathematics and Physics, Anhui Jianzhu University, Hefei 230601, China;
2 School of Civil Engineering and Transportation, Northeast Forestry University, Harbin 150040, China;
3 Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
Effect of speed humps on instantaneous traffic emissions in a microscopic model with limited deceleration capacity
Yu-Chen Hu(胡宇晨)1, Qi-Lang Li(李启朗)1,†, Jun Liu(刘军)1, Jun-Xia Wang(王君霞)2, and Bing-Hong Wang(汪秉宏)3
- 1 School of Mathematics and Physics, Anhui Jianzhu University, Hefei 230601, China;
2 School of Civil Engineering and Transportation, Northeast Forestry University, Harbin 150040, China;
3 Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
摘要： As a common transportation facility, speed humps can control the speed of vehicles on special road sections to reduce traffic risks. At the same time, they also cause instantaneous traffic emissions. Based on the classic instantaneous traffic emission model and the limited deceleration capacity microscopic traffic flow model with slow-to-start rules, this paper has investigated the impact of speed humps on traffic flow and the instantaneous emissions of vehicle pollutants in a single lane situation. The numerical simulation results have shown that speed humps have significant effects on traffic flow and traffic emissions. In a free-flow region, the increase of speed humps leads to the continuous rise of CO$_2$, NO$_X$ and PM emissions. Within some density ranges, one finds that these pollutant emissions can evolve into some higher values under some random seeds. Under other random seeds, they can evolve into some lower values. In a wide moving jam region, the emission values of these pollutants sometimes appear as continuous or intermittent phenomenon. Compared to the refined NaSch model, the present model has lower instantaneous emissions such as CO$_2$, NO$_X$ and PM and higher volatile organic components (VOC) emissions. Compared to the limited deceleration capacity model without slow-to-start rules, the present model also has lower instantaneous emissions such as CO$_2$, NO$_X$ and PM and higher VOC emissions in a wide moving jam region. These results can also be confirmed or explained by the statistical values of vehicle velocity and acceleration.
中图分类号: (Granular models of complex systems; traffic flow)
- 45.70.Vn