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Bandwidth Maximization for Split Phase Traffic Signals

Bandwidth Maximization for Split Phase Traffic Signals

Date18th Nov 2022

Time03:00 PM

Venue Google Meet

PAST EVENT

Details

Coordination of signalized intersections improves vehicle throughput and reduces delays, travel times, energy consumption, etc. One of the most popular and efficient coordination strategies is based on bandwidth maximization. However, most studies focused on bandwidth maximization strategies for overlapping phases. This study develops and implements a bandwidth maximization solution for a split-phasing signal system. For this, the minimum interference for different phase sequences is derived, and the maximum link bandwidth between intersections is obtained, along with the offsets. The proposed methodology is tested on a corridor comprising six signalized intersections with different green durations to obtain optimal offsets. The performance of the proposed method is benchmarked with optimal offsets obtained from TRANSYT software. The results show that the proposed method has an overall bandwidth attainability of 75% compared to only 27.63% using TRANSYT. Implementation of the offsets in a microsimulation shows that the proposed method performs better and gives fewer delays, stops and higher vehicle throughput for one direction and similar delay results for the other direction, compared to TRANSYT. Finally, the delay results with variation in vehicle composition have also been compared.

Speakers

Ms. Rashmi Dokubura, Roll No.CE20S018

Civil Engineering