Connecticut Department of Transportation

 CTDOT Green Light - Computerized Traffic Signal System Timing Plan Evaluation - CRCOG Banner

 

CTDOT Green Light is a transportation initiative that will update Connecticut’s traffic signal system timings. This will result in a wide range of transportation economic and environmental improvements that increase people’s quality of life by meeting user needs. The project offers better traffic flow to improve safety, reduce congestion, save fuel, and improved air quality.

There are several key components of CTDOT Green Light that are wide reaching and include:

Graphic for Performance Measures (clock for travel time, gas pump for fuel consumption, steering wheel for traffic flow, car with exhaust for vehicle emissions, and cars crashing)
Performance Measures

Since the beginning of 2020, the project has included retiming of the State Corridors highlighted in the maps below:

Connecticut state map with Capital Region Council of Governments coordinated traffic signal systems locations   Zoomed in Project Phase for Capital Region Council of Governments map with four corridor phases for coordinated traffic signal systems
Click on maps to view as a larger image.

This project is currently implemented in the Capital Region Council of Governments (CRCOG) area. This is a multi-phase project in which all four phases have been completed. Annual benefits resulting from signal timing changes include the following performance measures.

Performance Measures Graphic Representing Combined Results: reduction of 238,000 hours of delay; reduction of 207,300 gallons of fuel; savings of $7.442 million dollars; reduction of 1,822,000 kilos of emissions; and reduction of 16.08 million stops
Cumulative Performance Measure Phase Results

Each phase of the project consisted of improvements to signal timings of approximately 300 signals across the CRCOG area. CTDOT will continue to monitor the traffic signal operations and update every three to five years. To view the travel time run video, please click on the Performance Evaluation and Measures button below.

Traffic signal elements related to the project include:

Intersection Detection System Button

Intelligent Transportation System (ITS) Button

Performance Evaluation and Measures Button

 

Final Reports
Green Line

Phase 1 Final Report
CRCOG Phase 1 Report graphic 		 Phase 2 Final Report
CRCOG Phase 2 Report graphic 		 Phase 3 Final Report
CRCOG Phase 3 Report graphic 		 Phase 4 Final Report
CRCOG Phase 4 Report graphic 

For questions or comments email:
DOT.ITSEngineering@ct.gov

CTDOT Green Light - Connecticut Traffic Signal Program Initiative Footer Picture