In 2011, UDOT senior leaders challenged the traffic signal program to be “World-Class,” knowing the large return on investment that improved signal operations have on delay, safety and air quality. Performance measurement was a significant barrier to World-Class signal operations because data is historically labor intensive and cost prohibitive. Without effective performance measurement, UDOT struggled to answer key questions:
- How effective is our signal timing?
- What are the trends-are signal operations improving or getting worse?
- What should our priorities be?
This challenge led UDOT to develop an automated, in-house solution in 2013. Building on concepts developed by Indiana DOT and Purdue University, UDOT now uses existing field equipment to collect data from traffic signals in real-time. Software displays a number of performance measures, providing instantaneous feedback on the quality coordination plans, and respond to public inquiries. The data is available to UDOT staff, city and county partners, metropolitan planning organizations, academia, and public.
Traffic Signal Performance Measures all UDOT to actually measure what previously could only be modeled. This revolutionary program is generating national interest and demonstrates innovation and leadership in the industry.