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A Real-time Traffic Signal Control Algorithm based on Travel Time and Occupancy Rate

통행시간과 점유율 기반의 실시간 신호운영 알고리즘

  • 박순용 (도로교통공단 교통과학연구원) ;
  • 정영제 (도로교통공단 교통과학연구원)
  • Received : 2016.05.09
  • Accepted : 2016.07.15
  • Published : 2016.08.28

Abstract

This research suggested a new real-time traffic signal control algorithm using fusion data of the travel time and the occupancy rate. This research applied the travel time data of traffic information system to traffic signal operation, and developed the signal control process using the degree of saturation that was estimated from the travel time data. This algorithm estimates a queue length from the travel time based on a deterministic delay model, and includes the process to change from the queue length to the degree of saturation. In addition, this model can calculate the traffic signal timings using fusion data of the travel time and the occupancy rate based on the saturation degree. The micro simulation analysis was conducted for effectiveness evaluation. We checked that the average delay decreased by up to 27 percent. In addition, we checked that this signal control algorithm could respond to a traffic condition of oversaturation and detector breakdown effectively and usefully. This research has important contribution to apply the traffic information system to traffic signal operation sectors.

Keywords

Real-time Traffic Signal Control;COSMOS;Saturation;Travel Time;Queue Length

Acknowledgement

Supported by : 경찰청

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