Evaluation of Operational Performance of Intersection and Optimizing Signal Timing: A Case Study of the Buspark Intersection in Birgunj Metropolitan

Abstract

Congestion at key intersections on urban roads is a common occurrence, leading to traffic slowdowns and longer queue lengths. This significant delay leads to higher travel time expenses and diminishes the Level of Service (LOS). Birgunj is the industrial hub of Nepal, sharing its border with India. However, it has encountered multiple difficulties concerning its urban infrastructure, urban transportation network and traffic gridlock. Buspark Junction is located in the Bypass Road connecting Indian border to the East-West highway bypassing the city of Birgunj. The objective of this study is to enhance the traffic flow at the Buspark intersection in Birgunj Metropolitan. This was achieved by assessing the current traffic conditions and implementing various changes to reduce delays and congestion. 72 hours traffic volume data and geometrical characteristics of the intersection were collected and an existing model of the intersection was developed in software ‘SIDRA Intersection 8.0’. The validation of the model involved assessing both observed and simulated queue lengths for each approach, and an assessment of the current performance of the intersections was conducted. Two Possibilities were then developed to improvise the performance of the Buspark Junction; signal timing was optimized by changing the cycle lengths (Alternative I) and the continuous left-turning movement was controlled under signal time (Alternative II). The intersection’s Level of Service (LOS) was enhanced from E to D as a result of both Alternative I and Alternative II. These modifications led to reductions in the average delay of 34.7% and 38.8%, and also resulted in decreases of 34.7% and 40% in the Back of Queue (BOQ) respectively.

How to cite this article:
Luitel S, Pokhrel A, Dhakal A, Tiwari H. Evaluation of Operational Performance of Intersection and Optimizing Signal Timing: A Case Study of the Buspark Intersection in BirgunjMetropolitan. J Adv Res Civil Envi Engr. 2023; 10(2): 22-33.

DOI : https://doi.org/10.24321/2456.4370.202307