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The Effect of Red Light Violation on the Level of Service in Urban Signalized Intersections

Sharifian Jazi, Vahid | 2015

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 47069 (09)
  4. University: Sharif University of Technology
  5. Department: Civil Engineering
  6. Advisor(s): Nassiri, Habibollah
  7. Abstract:
  8. One of the frequent aspects of lawlessness at signalized intersections, is red-light violation (RLV). In addition to its adverse effect on intersection safety, RLV can cause delay in the startup of the vehicles in the next phase defined as “green flow”. In this research, in order to investigate the adverse effect of RLV, the required data were collected from two signalized intersections in the City of Esfahan, Iran using recording cameras. Then, using a cellular network in the intersections and the Aimsun traffic simulation software, the effects of RLV on the delay, capacity, and level of service of the intersections were evaluated. The results show that the behavior of the drivers in the green flow, the time into the red phase, and the duration of the all-red interval, are the prominent factors affecting the delay caused by this type of violation. Furthermore, in the absence of all-red interval, a delay of 1 to 4.5 seconds is inflicted on the vehicles on the green flow. This research also shows that entrapment of the red-light violators by the green flow vehicles, causes significant increase in delay. Also, results of Aimsun simulation show that volume of traffic entering the intersection and number of violations, have significant effect on the intersection’s level of service
  9. Keywords:
  10. Signalized Intersection ; Delay ; Service Level ; Red Light Violation

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