Sensitivity Analysis of Traffic Characteristics vs Changing Traffic Volume for Traffic Light and Intelligent Traffic Light (Case Study: Mahan Street of Karaj City)

Document Type : Original Article

Authors

1 M.Sc. Student, Transportation planning department, Faculty of Civil and Environment Engineering, Tarbiat Modares University, Tehran, Iran.

2 Transportation planning department, Civil and Environment Engineering, Tarbiat Modares University, Tehran, Iran

Abstract

Reducing delay time is one of the essential problems in mega-cities. Transportation engineers and urban planners recommend various approaches decreased delay time such as utilizing intelligent traffic light and so on. In this paper, we investigate the effect of traffic volume changing on traffic characteristics on two consecutive intersections in two scenarios (with the usual traffic light and the intelligent traffic light) and for this purpose data of Mahan Street of Karaj city is utilized and this street is simulated in AIMSUN. Results indicate that the intelligent traffic light can reduce delay time (24.5%), travel time (16%) and stop time (28.9%) also it can increase harmonic speed (22.6%). Traffic characteristics changing of the intelligent traffic light is formed of two lines with different slope however, traffic characteristics changing of the traffic light is formed one line. Therefore, the intelligent traffic light is extremely sensitive to design volume rather than the usual traffic light.

Keywords


- Bui, K.H.N. and Jung, J.J., (2018), “Cooperative game-theoretic approach to traffic flow optimization for multiple intersections”. Computers & Electrical Engineering, Vol. 71, pp.1012-1024.
- Comert, G., Pollard, J., Nicol, D.M., Palani, K. and Vignesh, B., (2018), “Modeling cyber attacks at intelligent traffic signals”. Transportation research record, Vol. 2672, No. 1, pp.76-89.
- Hu, W., Wang, H., Qiu, Z., Nie, C. and Yan, L., (2016), “A quantum particle swarm optimization driven urban traffic light scheduling model”. Neural Computing and Applications, Vol. 29, No.3, pp.901-911.