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Traffic signal control for short-distance intersections with dynamic reversible lanes

Traffic signal control for short-distance intersections with dynamic reversible lanes

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Short-distance intersections are defined as intersection pairs with short link and strongly interact with each other, and they are often challenged with overflow due to the limited queuing length. In order to solve this kind of traffic bottleneck, a coordinated signal control method for short-distance intersections with dynamic reversible lanes on the link is proposed in this paper. The direction of the dynamic reversible lanes is switched in coordination to the signal phase in a signal cycle, which can increase the storage space of the link and enhance capacity in both directions to prevent overflow. Based on the signal sequence under counter-clockwise split phasing scheme, signal timing is modeled to avoid spillover on the link with clearance time prepared for the dynamic reversible lanes, which is calibrated and validated with VISSIM, a microscopic simulation modeling tool based on time interval and driving behavior, to significantly avoid spillover and reduce the number of vehicle stops. It is concluded that the coordinated control method for short-distance intersections with dynamic reversible lane performs better with a shorter link, fewer lanes, higher saturation or high left-turn ratio into the link. This research may provide insights on enhancing road capacity for short distance intersections.

Chapter Contents:

  • 12.1 Introduction
  • 12.2 Application of dynamic reversible lane
  • 12.3 Model of signal timing
  • 12.3.1 Signal phase and sequence
  • 12.3.2 Signal timing model
  • 12.4 Calibration and validation
  • 12.4.1 Simulation scenarios
  • 12.4.2 Validation of the proposed plan
  • 12.5 Adaptability analysis
  • 12.5.1 Road conditions
  • 12.5.2 Left-turning traffic proportion
  • 12.6 Conclusion
  • References

Inspec keywords: traffic engineering computing; road traffic control; road vehicles; queueing theory

Other keywords: coordinated signal control method; short distance intersections; short link; counter-clockwise split phasing scheme; traffic signal control; microscopic simulation modeling tool; signal timing; left-turn ratio; short-distance intersections; VISSIM; dynamic reversible lanes

Subjects: Traffic engineering computing; Queueing theory

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