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Public Works

Flashing Yellow Arrow Deployment

For Traffic questions call 303-663-6237

Email Traffic Division
Graphic for traffic signals with different colored arrows and explanations of what a steady red arrow; steady yellow arrow, flashing yellow arrow and a steady green arrow mean

The graphic above explains how to treat an FYA when encountered at an intersection. Please keep an eye out as they are deployed to a Douglas County intersection near you!

The intent of the FYA display is to visually stimulate drivers to take extra caution when completing a permissive left turn across approaching traffic. In addition to emphasizing caution, the FYA also provides operational benefits over traditional permissive left-turn displays. One of these benefits includes the ability to address timeframes where higher than expected approach turn (left-turn vs approaching vehicle) accidents occur. The FYA enables “protected by time of day” (red arrow) left-turn operations to address temporal accident patterns while also providing the ability to provide permissive left-turn operations during low volume (early morning and/or late night) time periods. During protected-by-time-of-day operations (red arrow), the flashing yellow arrow display is turned off.

Traffic Engineering staff conducted a review of all signalized intersections in unincorporated Douglas County to ascertain the viability of implementing FYA. Not every intersection is a good FYA candidate for a variety of reasons, like safety and cost.

Intersections where Flashing Yellow Arrows have been deployed (updated Jan. 30, 2024):

  • Broadway & Plaza Dr/Northridge Rd (all approach left turns)
  • Broadway & Wildcat Reserve Pkwy (east/westbound approach left turns)
  • Chambers Rd & Cosmopolitan Cir (northbound approach left turns)
  • County Line Rd & Lucent Blvd (westbound approach left turns)
  • County Line Rd & Niagara St (east/westbound approach left turns)
  • County Line Rd & Shoppes St (7100 East) (east/westbound approach left turns)
  • County Line Rd & South Suburban St (westbound approach left turns)
  • Fairview Pkwy & Grace Blvd (southbound approach left turns)
  • Highlands Ranch Pkwy & Foothills Canyon Blvd (all approach left turns)
  • Highlands Ranch Pkwy & Wildcat Reserve Pkwy (all approach left turns)
  • Jamaica St & E-470 EB On-ramp/Mt. Spalding St (northbound and southbound approach left turns)
  • Lincoln Ave & 3rdSt (northbound and southbound approach left turns)
  • Lucent Blvd & Shea Center Dr/Park Central Dr (all approach left turns)
  • Lucent Blvd & Town Center Dr (northbound, southbound, and westbound approach left turns)
  • McArthur Ranch Rd & Valleybrook Dr/Wagon Box Cir (east/westbound approach left turns)
  • Meridian Blvd & Jamaica St (southbound approach left turns)
  • Meridian Blvd & Maroon Cir (all approach left turns)
  • Peoria St & Liberty Blvd (northbound approach left turns)
  • Quebec St/Monarch & McArthur Ranch Rd (northbound and southbound approach left turns)
  • Quebec St & Wildcat Ridge (northbound and southbound approach left turns)
  • Rampart Rd & Waterton Rd (all approach left turns)
  • Titan Rd & Moore Rd (westbound approach left turns)
  • Titan Rd & Roxborough Rd (all approach left turns)
  • University Blvd & 9350 S. (Highlands Ranch Marketplace) (all approach left turns)
  • University Blvd & Crosspointe Dr (all approach left turns)
  • Wildcat Reserve Pkwy & Grace Blvd/Cresthill Ln (northbound approach left turns)
  • Wildcat Reserve Pkwy & Spotted Owl Ave/Hyacinth Rd (all approach left turns)

Staff will monitor the performance of these intersections and will continue to identify other possible locations where the FYA could be a benefit to safety and operations.