Programmed Flash ends at some Indian Trail intersections

Change at three Indian Trail Traffic traffic signals begins Monday

Julie Happy, 509.625.7773,

Friday, November 13, 2015 at 2:47 p.m.

The City will be terminating programmed flash – setting traffic signals to flash during early morning hours – at three intersections on Indian Trail.

Programmed flash will be eliminated at the following intersections beginning Monday, Nov. 16:

  • Barnes Road and Indian Trail
  • Pacific Park Drive and Indian Trail
  • Shawnee Avenue and Indian Trail

Vehicle detection systems were recently installed at each intersection, so programmed flash is no longer needed to facilitate traffic flows. Vehicle detection allows the signals to respond promptly to vehicle demand. The system will allow for more efficient service during low volumes times when programmed flash was previously used (1 a.m. to 5 a.m. weekdays and 2 a.m. to 5 a.m. on weekends).

Eliminating programmed flash also provides for 24/7 operation of pedestrian signals at those intersections. Pedestrian signals do not work during programmed flash.