1. SensMetrics Hi-Resolution Signal Analytics for Signal Timing Optimization

2. Outline Sensys SensMetrics Solution SensMetrics Performance Measures
Analytic Foundation for Smart Cities
System Architecture
Application to Intersection Operations
SensMetrics Performance Measures
24x7 Performance Measures for Intersections
SensMetrics Turn Movement Counts
24x7 Counts and Turn Movements for Signal Timing
SensMetrics Signal Timing Optimization
Solution Attributes
Agency Benefits
Return on Investment

3. Analytical Foundation for Smart Cities
Traffic Management
Performance Measures
Traveler Info
Planning & Policy
SNAPS – Data Analytics
Network & Data Management
Wireless Sensor
Networks

4. SensMetrics Solution High-Resolution Performance Measures
Volume/Capacity Ratios
Arrivals on Green and Wait Times
Purdue Coordination Diagrams
Turn Movement Counts
Safety Information
Red light violations
Right Turn on Red violations
Continuous Data Archive
Comparison reports
Complaint investigation
Data for Signal Retiming and Optimization
Signal phases and cycle times
Days of Week grouping and TOD periods
Seasonal variations
SensMetrics Video:

5. SensMetrics Operates automatically, independently, and continuously
Mobility and Safety Performance Measures
Operates automatically, independently, and continuously
Leverages accuracy and synchronization of Sensys Networks wireless detectors
Data For Signal Timing
&
Intersection Performance Measures
Data Fusion
&
Algorithms
Builds on basic Sensys detection platform, moves up the food chain.
Sensys Networks Detections
&
Signal Phase Timings

6. SensMetrics System Architecture
Intersection (TS2) configuration
Automatic data collection and performance measurement
Independent of controller operation
Continuous availability and online data archive
TS2
Ethernet
APCC M U
USB
FlexConnect
SDLC

7. SensMetrics System Architecture
Intersection (2070/170) configuration
Automatic data collection and performance measurement
Independent of controller operation
Continuous availability and online data archive

8. Signal Timing with SensMetrics
Proactive & continual performance management
COLLECT
Obtain turn count data, analyze seasonal trends
EVALUATE
Run periodic reports, evaluate performance deterioration
SensMetrics
Performance
Time
Maintain Long Term Performance
OPTIMIZE
Generate optimal TOD plans and phases,
Implementation

9. SensMetrics: Intersection Configuration

10. Volume/Capacity Ratios
SensMetrics Reports
Volume/Capacity Ratios
Counts
Arrivals on Green
Wait Times

11. More SensMetrics Reports
Purdue Coordination Diagram
Turn Movement Counts
Red Light Violations
Comparison Report

12. Signal Timing Optimizations
Based on 24x7 Turn Movement Counts
Optimizing Days of Week Clusters
Optimizing Time of Day Boundaries
Optimizing Cycle Time, Green Splits, Offset

13. Optimizing Days of Week Clusters
Apply k-means clustering to identify clusters
Ideally (and usually), clusters correspond to days of week

14. Optimizing Time of Day Boundaries
Within cluster, identify changes in turn counts

15. Optimizing Green Splits
Current
Optimized

16. Safety - Priceless Danville Case Study: Red Light Violators
Total violators - 666
This information can be utilized for several purposes. Used in conjunction with the previous charts, are there any timing issues which need to be addressed to improve safety? How did retiming affect safety?
This also can be used to provide law enforcement with timely information so they can potentially target intersections with red light running issues with enforcement to change driver behavior
Enforce, educate?

17. SensMetrics Product
Components
Optimized signal timing based on 24x7 automatic turn movement counts
Intersection performance and safety metrics
Accurate and high-resolution detection data for reliable performance measures
Monitoring and maintenance of sensors, repeaters and access points for data integrity and availability
Supports existing traffic agency infrastructure including current signal controller operations and IT network and servers

18. Summary Study seasonal, weekly, daily trends
Traffic Operations move from Reactive to Proactive
24x7 Turn Movement Data
Study seasonal, weekly, daily trends
Optimize timing plans: days of week, TOD splits; phase splits; signal offsets
Ability to re-time your signals as often as you want
24x7 Performance Measures
Identify deficiencies in your timing plans
Fix them and see the results of changes
Validation of customer complaints
Determine impacts of work zones/diversions
Increase safety of intersections
Identify periods of red-light violations