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Broward County Traffic Engineering Programs
- Traffic Signal Coordination
- Hardware and Software Technologies
Broward County Traffic Engineering Programs Broward County Traffic - - PowerPoint PPT Presentation
Broward County Traffic Engineering Programs Broward County Traffic - - PowerPoint PPT Presentation
Broward County Traffic Engineering Programs Broward County Traffic Engineering Programs Traffic Signal Coordination Hardware and Software Technologies Broward County Traffic Engineering Programs Traffic Signal Coordination
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Broward County Traffic Engineering Programs
- Traffic Signal Coordination
- Hardware and Software Technologies
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County’s Traffic Signal Network
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- 1,400+ signalized intersections
- 100’s miles of underground copper and fiber-
- ptic communications
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Traffic Signal Cycle Red-Yellow-Green Phases
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Minor Street Major Street Left Turns Major Street
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[NORTH]
A Street A Street B Street C Street D Street E Street F Street
TIME
= GREEN PHASE MAJOR STREET = RED PHASE MAJOR STREET
Typical Signal Progression
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[NORTH]
A Street A Street B Street C Street D Street E Street F Street
TIME
= GREEN PHASE MAJOR STREET = RED PHASE MAJOR STREET
Well-Synchronized (Goal)
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Half-Cycling Concept in Downtown Areas
[NORTH]
A Street B Street C Street D Street E Street F Street G Street
TIME
= GREEN PHASE MAJOR STREET = RED PHASE MAJOR STREET
80 SEC 160 SEC
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Half-Cycling Concept in Downtown Areas
[NORTH]
A Street B Street C Street D Street E Street F Street G Street
TIME
= GREEN PHASE MAJOR STREET = RED PHASE MAJOR STREET
WALK WALK WALK WALK
80 SEC 160 SEC
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Complex Cross-Coordination
Thousands of movements (17,000+), a very large grid, optimized in all directions
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Ongoing Signal Coordination Program
August 2010 – May 2012 Green Lights Phase 1 All Major Corridors Retimed June 2012 – April 2014 Green Lights Phase 2 All Major Corridors Refined N/S and E/W Better Integrated
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Signal Coordination Benefits
- Fuel Saved: $31 Million/Year
- Carbon Emissions Reduced: 660,000 Metric Tons/Year
= 7% Reduction of Transportation Emissions = 3% Reduction of Total Emissions
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Ongoing Signal Coordination Program
Regularly update, test, refine and adjust signal timing to address changing traffic volumes and patterns
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Ongoing Signal Coordination Program
Synchronization Adjustments Using GPS Recordings
“After” Travel Time = 199 Seconds “Before” Travel Time = 310 Seconds Travel Time Savings = 111 Sec. (36%)
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Signal Coordination is Impacted by:
- Railroad crossings and bridge openings
- Emergency vehicle preemptions
- Construction
- School zones
- Crashes
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Inflow > Outflow = Storage (or Overspill)
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Overcapacity = Congestion
Cannot be overcome by signal timing adjustments
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Broward County Traffic Engineering Programs
- Traffic Signal Coordination
- Hardware and Software Technologies
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Outdated System Has Been Upgraded
Fully Modernized - July 2015
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Coordinated Even With Network Interruptions
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Remote Troubleshooting
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Quicker Response Times
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Assists Buses to Maintain Schedules
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Transit signal priority at 650+ intersections
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Transit Signal Priority (TSP)
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- Buses are tracked using GPS (satellite)
- Bus requests “green extension” or “early green
return” of traffic signal to stay on schedule
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Bike Safety Enhancements
New Technology – Video Bike Detection
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Bike Safety Enhancements
New Technology – Video Bike Detection
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Bike Safety Enhancements
New Technology – Video Bike Detection
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Bike Safety Enhancements
New Technology – Video Bike Detection
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Bike Safety Enhancements
New Technology – Video Bike Detection
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Bike Safety Enhancements
New Technology – Video Bike Detection
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Bike Safety Enhancements Bike Traffic Signal Indications
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Questions?
Contact us at:
TRAFFIC@Broward.org
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