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Consolidation Commission - Transportation Sub-Committee City of Orlando Signalization Presentation September 8, 2005.

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Presentation on theme: "Consolidation Commission - Transportation Sub-Committee City of Orlando Signalization Presentation September 8, 2005."— Presentation transcript:

1 Consolidation Commission - Transportation Sub-Committee City of Orlando Signalization Presentation September 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 SYSTEM 100 Signals Interactive Grid Communications with Traffic 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 – Bumby – Maguire/Crystal Lake – Edgewater – Vineland – Conway – Semoran Boulevard – Narcoossee North-South

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 APPROACH Roadway 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 SYSTEMS 202 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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