InSync's Performance

Greeley, CO


Greeley, CO (10th Street)


Colorado DOT and City of Greeley




25,000 to 28,000

Contact Info

Eric Bracke, P.E., P.T.O.E., Traffic Engineer, City of Greeley or 970.350.9357

Larry Haas, Traffic Operations Engineer, Colorado DOT or 970.350.2143

Length of Corridor

4 miles

Deployment Date

April 2012

InSync Type

InSync Standard


Variable traffic flow from seasonal demand, events and schools as well as heavy commuter traffic

Previous signal management

Coordinated timing plans

The Colorado Department of Transportation partnered with the City of Greeley to pilot InSync. The project aimed to implement a system that continuously adjusts to traffic conditions while reducing wasted time and fuel, maintenance efforts and vehicle emissions. The independent study from Atkins reported:

  • “Since implementation of the system, Greeley staff has reported a decrease in the number of complaints received regarding signal timing on the 10th Street corridor.”

  • “The evaluation of the system found that the improved operations will result in an estimated annual savings of $1.326 million on travel times, maintenance and fuel consumption…It is estimated that the InSync system implementation will pay for itself in 238 days.”

  • “Both CDOT and Greeley staff indicated that the new system would eventually cost much less to maintain once staff was confident in the operations of the adaptive system. It was estimated that the new [InSync] system would require about $500 per signal per year for maintenance…”


Daily Benefit Annual Benefit
Vehicle Hours of Travel
203 hours 52,837 hours
Fuel Consumption
257 gallons 66,898 gallons
10,077 stops 2,620,090 stops
Total Economic Benefit $4,957 $1,288,700

The benefits in the table above represent the evaluation of the before-and-after data collected by Atkins and analyzed with PC-Travel. All calculations are based on normal weekday travel and the results indicate approximate benefits to drivers. Results presented here are more conservative than the Atkins study in part because only weekday benefits are included.



in stops


reduction in
travel time


in delay


in emissions


increase in
average speed


reduction in
fuel usage

Measures  of Effectiveness

Data and independent study by



InSync results data collected May 2012

Download Case Study and MOEs

InSync Type

InSync Standard

Detection Type


Cabinet Type


Controller Type


Connection Type

C1 Y Cable

Colorado DOT Uses InSync to Manage Traffic

The Colorado Department of Transportation and City of Greeley, CO recently installed InSync adaptive traffic signal control along 10th Street corridor in Greeley. In this video, hear directly from the two traffic signal control along 10th Street corridor in Greeley. In this video, hear directly from the two traffic engineers who led the project, Larry Haas, P.E. and Eric Bracke, P.E., P.T.O.E. Learn about the traffic management challenges the agencies were facing, […]

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InSync Adaptive Signals Help Keep Traffic Moving in Greeley, CO

Greeley drivers may have noticed recently that traveling on U.S. 34 Business (10th Street) between 23rd Avenue and 59th Avenue has been a bit easier of late. Yet no highways were uprooted, no lanes were added, and nothing really seemed to change. Curious how this […]

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Greeley, CO’s Smart Traffic Signals Cut Travel Time

Motorists traveling 10th Street who think they see more green lights these days aren’t going crazy — traffic signals along the corridor really are turning green more often, thanks to a new system installed earlier this year. The adaptive traffic signals, which line 10th Street from 23rd to 59th avenues, can […]

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Innovative Traffic Signals Shorten Travel Time in Greeley, CO

(Colorado DOT news release) August 2, 2012 – The Colorado Department of Transportation (CDOT) and the City of Greeley Transportation Division recently partnered to install an “Adaptive Traffic Signal” control system on US 34 Business (10th Street) between 23rd Avenue and 59th Avenue. [The technology installed is InSync from Rhythm Engineering. -RE] The purpose of this partnership was […]

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Greeley Colorado Case Study Video

Project Highlight

"The project has been an incredible success. It far exceeded any expectation that we had." -Eric Bracke, P.E., City of Greeley, CO


Download Case Study and MOEs

The InSync technology was met with skepticism and has now proved itself. This technology works!… The feedback from public officials and motorists is off the charts.”