East 26th Street Traffic Flow to Improve With New Technology


The City of Sioux Falls is installing a new traffic control system at 10 intersections on East 26th Street from Van Eps Avenue to Highline Avenue. The new InSync Adaptive Traffic Control system from Rhythm Engineering combines real-time traffic detection with real-time signal changes. As a result of the technology, drivers often experience shorter travel times and fewer stops. In addition, this system has been proven to reduce fuel use and vehicle emissions and improve safety.

Newly installed cameras at the intersections use video technology to detect traffic flow. Based on the information the system detects, traffic signal changes are optimized to allow traffic to move more smoothly. This means that signals will change according to traffic demand and not to preset patterns.

The signals will begin working differently mid-January.

Adaptive Traffic Map
Click image to view larger.


The 26th Street corridor from Van Eps Avenue to Highline Avenue is one of the busiest streets in Sioux Falls with more than 25,000 vehicles travelling it each day. The 26th Street corridor also faces multiple traffic challenges, including:

  • School zones on both ends of the corridor
  • A railroad crossing on 26th Street near Southeastern Avenue
  • An interchange with I-229  

The City of Sioux Falls is among the leaders in the region regarding environmental initiatives and is constantly researching ways to reduce the city’s environmental impact. The new InSync system will improve traffic flow on this corridor while also reducing fuel consumption and vehicle emissions. On average, cities that have fully integrated this system into their community have seen a 20% to 30% reduction in fuel consumption and vehicle emissions. These goals are in line with the City’s Sustainability Master Plan goal to reduce greenhouse gas emissions from non-governmental community activities by 10%.



What is adaptive traffic control?
Adaptive traffic control is a method of controlling and optimizing traffic signals in response to real-time traffic.
What changes can I expect?
The system will be turned on mid-January on East 26th Street from Van Eps Avenue to Highline Avenue. Expect changes to the timing of traffic signals as they are responding to real-time traffic. After the system is turned on, drivers may experience shorter travel times and fewer stops.
Is this new technology the result of the I-229/26th Street Corridor Study?
No. The I-229/26th Street Corridor Study’s goals are to reduce the traffic congestion on 26th Street and improve the interchange at I-229. This project could impact the actual design and structure of the roadways while the Adaptive Traffic project seeks to improve traffic flow on the corridor as it is designed today.
Do the cameras store the video?
No. Although it would be possible, the City is not storing video streams from the InSync Samsung cameras on the East 26th Street corridor at this time.
Do the cameras monitor vehicles that run red lights?