Project Summary: Dynamic Flashing Yellow Arrow Phase Mode Selection
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Project Summary: Dynamic Flashing Yellow Arrow Phase Mode Selection

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Details:

  • Alternative Title:
    Dynamic Flashing Yellow Arrow Phase Mode Selection
  • Corporate Creators:
    SRF Consulting Group
  • Corporate Contributors:
    Minnesota. Department of Transportation
  • Subject/TRT Terms:
  • Resource Type:
    Brief
  • Geographical Coverage:
    United States
  • Edition:
    CAV Project Summaries
  • Corporate Publisher:
    Minnesota. Department of Transportation
  • Abstract:
    This project focused on utilizing high-resolution signal data, crash data, and volume data to analyze safety impacts associated with the three left turn phasing modes that flashing yellow arrows could operate in and determine when the various modes should operate. The three modes were as follows: Protected only; Protected-permissive; Permissive only. The project team needed to analyze the data in two different methods to better understand the results. The analysis was completed for 9 scenarios with different combinations of: Speed (Low/High); Lateral Offset (Positive/Negative); Left-Turn Lane (Single/Dual). The result of this project was a methodology that could be used for future analysis and incorporation of safety data into flashing yellow arrow (FYA) operations decisions. No specific updates were made to the existing FYA phase mode decision spreadsheet.
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