Performance Assessment of a Signalized Intersection: A Case Study of Gandak Intersection of Birgunj, Nepal
Keywords:
calibration, validation, level of service, average delay, queue length, capacity.Abstract
Tribhuvan Highway and Birgunj Bypass Road converge to form the Gandak intersection which is situated at Birgunj Metropolitan City, Nepal. The study aims to provide an overview of the existing scenario for the Gandak intersection along with the measures to enhance the performance of the intersection. With the help of the data collected, the current condition of the Gandak intersection is known. Further, SIDRA Intersection 8.0, a traffic analysis tool, is utilized to model the environment and traffic flow parameters for the calibration and validation of the intersection. The performance assessment for the field data as well as the program-generated data is carried out keeping the level of service, average delay, and queue length under consideration. To enhance the performance of the intersection, the practical signal timing was replaced with that of the software-generated timing that increased the LOS of the intersection from E to D along with a 42% decrease in average delay and a 20% decrease in the back of queue.
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