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Signal Operational Review Performance Monitor *

Review of traffic signal operational data and performance monitoring for low and high volume signals, including requirements and results.

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Signal Operational Review Performance Monitor *

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  1. Signal Operational Review Performance Monitor * • Low Volume Traffic Signal (2-lane roadway AADT <= 10,000 or Multi-lane roadway AADT <= 15,000; Use the largest AADT, SR or Cross Street) • High Volume Traffic Signal (2-lane roadway AADT > 10,000 or Multi-lane roadway AADT > 15,000; Use the largest AADT, SR or Cross Street) • Coordinated Traffic Signal (Any Signal that is physically interconnected to another signal or is operated in conjunction with another signal based on time.) • 884 Traffic Signals are Owned and Operated by WSDOT (Focus of Performance Monitor) • 151 Traffic Signals are Owned by WSDOT and Operated by Others • 207 Traffic Signals are Owned by Others and Operated by WSDOT * Signal Operational Review data, current as of September 30, 2007 as reported by the responsible Signal Operations Engineer in each Region Traffic Office.

  2. Signal Operational Review Performance Monitor * MinimumSignal Operational Review Requirements Note: The exact method for meeting requirements is at the discretion of the responsible signal operations engineer. 1) Volumes - Collect Movement Counts 4) Analyze Crash History (2ys) 2) Analyze Phasing 5) Field Review 3) Analyze Channelization 6) Analyze Signal Timing OptionalSignal Operational Review Requirements Note: Some traffic signals may require additional review and analysis to operate at peak efficiency. 1) Speed Study 4) Construction Timing Plan(s) 2) Travel Time Study 5) Special Event Timing Plan(s) 3) Incident Response Timing Plan(s) 6) Traffic Analysis Modeling

  3. Signal Operational Review Performance Monitor * Quarter 3, 2007 (July - September) 85% 83% 80% 66% 58% 53% Percent of Traffic Signals Meeting the Operational Review Goal 43% 1) SCR 85% 2) NCR 83% 3) ER 80% 4) SWR 66% 5) NWR 53% 6) OR 43% Statewide 58%

  4. Signal Operational Review Performance Monitor * Coordinated Traffic Signals (363 Owned and Operated by WSDOT) High Volume Traffic Signals (410 Owned and Operated by WSDOT) 58% at Goal 54% at Goal Low Volume Traffic Signals (111 Owned and Operated by WSDOT) All Traffic Signals Statewide (884 Owned and Operated by WSDOT) 70% at Goal 58% at Goal

  5. Signal Operational Review Performance Monitor * • During Quarter 1, 2007, 872 Traffic Signals were • Owned and Operated by WSDOT • During Quarter 2, 2007, 875 Traffic Signals were • Owned and Operated by WSDOT • During Quarter 3, 2007, 884 Traffic Signals were • Owned and Operated by WSDOT 60% 59% 58%

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