Dynamic flashing yellow arrow (FYA) : a study on variable left turn model operational and safety impacts, [technical summary].

Details

• Creators:
  Radwan, Essam
• Corporate Creators:
  University of Central Florida
• Subject/TRT Terms:
  • Signalized intersections
  • Left turn phase
  • Flashing traffic signals
  • Arrows (Signals)
  • Yellow interval (Traffic signal cycle)
  • Decision support systems
  • Traffic control centers
  • Traffic safety
  • Exclusive permissive phasing
  • Periods of the day
• Publication/ Report Number:
  BDK78-977-15
• Resource Type:
  Tech Report
• Geographical Coverage:
  Florida
• Corporate Publisher:
  Florida. Dept. of Transportation
• Abstract:
  Traffic engineers use various left-turn signalization ; methods to find an optimal balance of safety and ; efficiency. While protected/permitted left-turn ; configurations allow most left-turning traffic to ; turn during the protected phase, the permitted ; phase exploits the efficiency of using available ; gaps in oncoming traffic to facilitate additional ; left turns. In many cases, concerns arise with left ; turning traffic patterns during certain times of ; day, such as school arrival and dismissal. When ; such concerns arise, engineers have changed from ; protected/permitted phasing to protected-only ; by changing the signal displays. Historically, this ; change required physical replacement of overhead ; signal displays and was essentially a permanent ; change, even though it may only be needed a few ; hours per day. The four-section display with a ; flashing yellow arrow overcomes this limitation.
  More +
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/26889/dot_26889_DS1.pdf
• File Type:
  [PDF - 926.27 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:3418b85b7f103f97776e4457e8a62c10d7b4907aa2c99bbe44d12d730977086a