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San Joaquin Valley Blueprint. Smart Growth PrinciplesCreate lower dependence on typical transportation conceptsSteer away from primary mode of automobile travelIncrease viability and attractiveness of alternative modes of transportation (walking, biking, transit, etc.)Translation to local agencies:Adoption of goals and policies in updated General PlansSignificant impact to the traditional development of the circulation systems.
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6. Traffic Signal Management Benefits of active signal management
Travel time savings for all modes of travel
Reduces problems associated with aggressive driving
Postpone additional capacity improvements
Reduces accidents through smooth flow and reduced stops
Improved pedestrian flows
Active side street flow with minimal main street delay
7. Traffic Signal Coordination
8. Traffic Signal Coordination Coordination Goals
Key modes of travel
Key travel times
Coordination Process
Preliminary Study
Analysis of Existing conditions
Benefits of coordination
Reduction in travel time, stops, fuel, emissions, etc.
Hardware upgrades
Preliminary coordination plan
Report (Cost – Benefit Analysis)
9. Funding Options Federal
SAFETEA-LU
Surface Transportation Program (STP)
Congestion Management and Air Quality (CMAQ)
State
Proposition 1B
State Transportation Improvement Program (STIP)
Traffic Congestion Relief Program (TCRP)
Regional and Local
Transportation Development Act (TDA)
Developer Funded Improvements
Regional Sales Tax
Gas Tax
10. Traffic Signal Coordination (cont’d) Types of coordination
Time based coordination
Closed loop systems
Hardwire interconnect (coaxial, fiber optic, telephone)
Wireless (spread spectrum radio, wi-fi)
Monitoring
Traffic Operations Center (TOC)
Centralized location to monitor multiple signals and coordinated corridors
Monitoring available via intersection detection (loops, video)
Provides immediate observation and response to signals
11. Traffic Signal Coordination (cont’d) Analysis
Synchro – Simtraffic
Input signal timing parameters
Develop coordination offsets
Calculate changes
12. End Results Determine final results
Field observation
Actual travel times
Queue lengths
Monitoring
Software analysis
Emissions, stops, fuel reduction
14. Project Map
15. Project Overview Data gathered by consulting team
Synchro used to develop a coordination model
Optimization of model
Field implementation and final report
16. Synchro Analysis Package Purpose and Use
Overview of Process
Discussion of Output
Timing plans for individual intersections
Phase plans for individual intersections
Optimization plans
Time – Space diagrams
Measures of Effectiveness
Volume to capacity ratios
Vehicle delay
Vehicle stops
17. Specific Hardware and Timing Changes Hardware Upgrades and Changes
Changes in Intersection Timings
Time – Space Diagrams
New Timing Plans
Public Reaction to Coordination
18. Time - Space Diagram (Westbound plan)
19. Time - Space Diagram (Average)
20. Comparisons Before & After With Mitigations - AM
21. Comparisons Before & After With Mitigations - PM