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Consolidation Commission - Transportation Sub-Committee

Consolidation Commission - Transportation Sub-Committee. City of Orlando Signalization Presentation September 8, 2005. Traffic Signal Operation. Signal Mounting System Signal Heads Detectors Signal Controller Interconnect Link to Other Signals

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Consolidation Commission - Transportation Sub-Committee

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  1. Consolidation Commission - Transportation Sub-Committee City of OrlandoSignalization PresentationSeptember 8, 2005

  2. Traffic Signal Operation • Signal Mounting System • Signal Heads • Detectors • Signal Controller • Interconnect Link to Other Signals • Communications/Control Link to Traffic Management Center (TMC) • Traffic Management Center

  3. Signals Overview • FDOT – No operations • Provide funding for state road maintenance • Approve phasing and signal modifications • Timing set by local agency • City – All City signals • County • All County signals • Maintenance agreements with some small cities • Private – Control Specialists • Ocoee, Winter Springs, Oakland, Winter Park, Maitland

  4. ORLANDO SIGNAL SYSTEM • 470 Devices • 416 Signals • 14 Cameras • Traffic Management Center (TMC)

  5. Communication Interconnect • 21 Miles of Fiber Optic Cable • 50 Miles of Twisted Pair • 16 Locations connected via Radio

  6. GENERAL STRATEGIES • Time all lights on 3 year cycle • Improve reliability of loops • Real time data Aerial Detectors Presence Speeds Stationary & Moving Length of Queues

  7. DOWNTOWN Challenges Growth Lack of Detectors Lymmo Railroad Tracks & Trains

  8. DOWNTOWN SYSTEM100 Signals • Interactive Grid • Communications withTraffic Management Center (TMC) • Programmed Timing Plans

  9. Downtown Growth • Employment – 56,000 to 75,000 • Residential Units – 3,000 to 7,000

  10. Lack of Detectors • Timing plans by time of day • AM Peak • Mid-day • PM Peak • Evening & Nights • Shorter cycle lengths • More Green time on Main street • Flash selected locations

  11. Lymmo Preemption throws off timing

  12. Railroad Tracks & Trains Trains interrupt timing

  13. DOWNTOWN SOLUTIONS • Adaptive System • Manual Intervention from TMC • Special Event Management • Dynamic Signs • AM Radio Advisories • Cameras • Add Detection Loops and/or Video Detection

  14. MAJOR CORRIDORS(City – County – FDOT)Major Corridor Total - 114 Signals • Kirkman • JYP • Hiawassee Road • OBT • Orange • Magnolia • Mills North-South • Bumby • Maguire/Crystal Lake • Edgewater • Vineland • Conway • Semoran Boulevard • Narcoossee

  15. MAJOR CORRIDORS(City – County – FDOT) East-West • Princeton • Virginia/Corrine • Colonial • Robinson/Washington • Central Boulevard • South/Anderson/Lake Underhill • Gore • Kaley • Michigan • Lee Vista Boulevard • Curry Ford

  16. MAJOR CORRIDORS APPROACHRoadway Hierarchy • Primary roads • Determines master cycle length • Determine green time allocation • Primary road example is: SR 436 (Semoran Boulevard) • Secondary Roads • Curry Ford • Tertiary Roads • Conway • Local Access Roads

  17. MAJOR CORRIDOR STRATEGIES • Connected to TMC • Redundant communications • All loop & video detectors in rush hour • Main street green gets majority of green • Left turn minimum setting or skip if not present • Override for left turn • Side street queue override • Some crossing streets problems – drag racing, speeding

  18. MINOR SYSTEMS202 Signals • Within Major Developments • Short segments/Small clusters • Individual Isolated Signals at Access Points

  19. MINOR SYSTEMS STRATEGIES • Protect main street green • City/County approval of timing plans • Retime on an “At least every 3 years cycle” • Improve staff training • Reduce reliance on consultant’s support for timing • Reduce retiming cycle to annually

  20. REALITIES OF SIGNAL SYSTEM OPERATION Capacity • Near capacity – Variable performance • Exceed capacity – unpredictable performance • Peak Capacity conditions • Overall Capacity Deficiencies • Frequent failures to clear intersection • Frequent intersection blockage • Frequent pressing of red at both crossing movements • SIGNAL COORDINATION IS LOST • Non-Signal Options are very expensive

  21. Other Realities • Pedestrian – push buttons at intersections • Schools • Pedestrian crossings – students • Parent cars queue • School buses • Fire Stations with Preemptive controls • Construction • Cut loops & communications lines

  22. Coordination Agreements • Current agreement includes 12 intersections • 6 City of Orlando • 6 Orange County • Coordination responsibility given to other agency • Equipment Maintenance remains with original agency

  23. City – County Coordination • Official Committees • Central Florida ITS Consortium • Metroplan M & O Subcommittee • District 5 Maintaining Agencies Group • Informal (Staff to Staff) • Transportation Manager to Manager • Senior Engineer to Signal Systems Engineer

  24. Emerging Standards for Hardware • National Transportation Communications for ITS Protocol (NTCIP) • Federally mandated • Not finalized • Hardware is functionally compatible, but software is incompatible between City and County • Staff is not trained to work on other systems

  25. FUTURE ACTION • Review Specific Locations • Review Overall System • Review Communication Links for Other Opportunities

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