1. We can’t promise all green lights… …but we can minimize the number of red lights, stops and delays.

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Presentation transcript:

1

We can’t promise all green lights…

…but we can minimize the number of red lights, stops and delays.

County’s Role: County operates and maintains all County, FDOT, and municipal traffic signals. Network is countywide and crosses all municipal boundaries. Eliminates jurisdictional barriers and allows seamless synchronization.

Key Goal – Improve Traffic Flow for: Vehicles Mass Transit Pedestrians Bicycles 5

Benefits: Minimize Fuel Consumption Reduce Greenhouse Gas Emissions Reduce Travel Delays Enhance Economic Development Improve Safety 6

Two Key Steps to Improve Traffic Synchronization Improve Signal Timing Plans “Green Lights.” Upgrade Hardware and Software. 7

Two Key Steps to Improve Traffic Synchronization Improve Signal Timing Plans “Green Lights.” 8

Each Roadway Corridor has Three Different Synchronized Timing Plans Morning: 6:00 – 9:00 AM Afternoon:3:00 – 8:00 PM Off-Peak:9:00 AM – 3:00 PM 8:00 PM – 12:00 Midnight (Non-Synchronized Midnight to 6:00 AM) 9

One-Way Progression 10

Two-Way Progression 11

Cross Streets 12

Irregular Spacing 13

Left Turns 14

Pedestrian Crossings 15

“Basket-Weave” 16

Compromises and Trade-offs… 17

Where Are We Today? 18

August 2010

August 2011

May 2012

Today, 55 Corridors and 1,050 Intersections

“Green Lights” Performance Results Travel Time Saved: 10% to 43% Stops Reduced: 10% to 32% Positive Feedback from Motorists 23

“Green Lights” Performance Results (Cont.) Fuel Saved: $31 Million/Year Carbon Emissions Reduced: 660,000 Metric Tons/Year = 7% Reduction of Transportation Emissions = 3% Reduction of Total Emissions 24

Synchronized Traffic Signals Cannot Solve These Conditions: Overcapacity/Rush Hour Crashes School Zones Railroad Crossings and Bridge Openings Construction Emergency Vehicle Preemptions Traveling Over Speed Limit 25

26 Current Activities “Green Lights” Continuous Refinement Complex Modeling Transit Signal Priority & Queue-Jumper FDOT Adaptive Control Pilot Projects

Second Key Step Upgrade Hardware and Software. 27

Aging Equipment and Obsolete Technology 25-Year Old Software & Mainframe Computer Analog (Not Digital) Network 28

New System Has Multiple Benefits 29

Less Computer Crashes/Easily Maintained

Remain Synchronized Even with Minor Signal Interruptions 31

Support Transit Operations 32

Troubleshoot Remotely 33 Currently – Crews Must be Dispatched Future – Monitor/Troubleshoot from Central Control Center

Multiple Timing Plans for Complex Traffic Conditions 34

Adjust System in Real Time 35

How Are We Upgrading the System? Keep Existing Equipment Operating Install New Computer/Software/Digital Network Switchover to Digital Intersection-by- Intersection 36

New Hardware and Software Are Already Running

New Digital Network: Hybrid – Fiber Optics/Wireless/Digital Copper Share Use of Fiber with FDOT Projects Install Fiber on County Projects and to Fill in Gaps 38

Initial Digital Conversion Now: 60% Converted FY 2015: 100% Converted Full System Improvements FY

Estimated Capital Cost ($million) Activity FY11 - FY14Future Signal Retiming/Modeling Hardware and Software Total

Questions? 41