southwest washington its traffic data collection & analysis : a tale of 3 projects
DESCRIPTION
Southwest Washington ITS Traffic Data Collection & Analysis : A Tale of 3 Projects. Jill MacKay ITE Traffic Simulation Roundtable October 4, 2012. Three Projects. C-TRAN/City of Vancouver TSP Before/After Evaluation - PowerPoint PPT PresentationTRANSCRIPT
Southwest Washington ITS Traffic Data Collection & Analysis:A Tale of 3 Projects
Jill MacKayITE Traffic Simulation RoundtableOctober 4, 2012
Three Projects
1. C-TRAN/City of Vancouver TSP Before/After Evaluation– Purpose: Evaluate transit and traffic operations performance
impacts of pilot TSP implementation.2. RTC TSMO Demonstration Project
– Purpose: Measure impacts of improvements on two key arterials3. Southwest Region Advanced Traveler Information System Data
Evaluation– Purpose: Determine usability and relative accuracy of INRIX™
traffic data for WSDOT traveler information applications.
ITE Traffic Simulation RoundtableOctober 4, 2012 2
TSP Pilot Project Overview
• Mill Plain Blvd between Fort Vancouver Way and 160th Avenue • 22 intersections equipped, 8 included in analysis
ITE Traffic Simulation RoundtableOctober 4, 2012 3
TSP Pilot Evaluation Approach
• Impacts assessed for both signal ops and transit
• 3 Evaluation Phases• Data collected for AM, mid-day and PM peaks
– CAD/AVL– APC– Intersection observation – Controller logs
ITE Traffic Simulation RoundtableOctober 4, 2012 4
Signal Operations Transit (Route 37)Queue lengths Running and Travel time
Cycle failures Reliability/Variability
Vehicle throughput Average Intersection Delay
Ridership
Transportation Systems Management and Operations (TSMO) Demonstration Project Overview
• Vancouver RTC TSMO Plan adopted 2011• Andresen Road and Mill Plain Boulevard
– New fiber– Signal upgrades– Intersection improvements– New CCTV and vehicle detection
• Desired outcomes– Enhanced signal system performance– Improved response to real-time traffic conditions.– Expanded arterial traveler information– Automated data collection for planning and reporting
ITE Traffic Simulation RoundtableOctober 4, 2012 5
TSMO Corridor Evaluation Approach
• Before/After evaluation of TSMO improvements– Corridor performance: segment travel times and vehicle speed – Signal timing: percent vehicle arrival during traffic signal green– Ongoing performance verification: vehicle volume, speed, and
classification
ITE Traffic Simulation RoundtableOctober 4, 2012 6
• Travel times• O-D
• Volume• Speed• Classificatio
n
• Percent vehicle arrival while green
WSDOT ATIS Data Evaluation Overview
• Exploring viability of third-party data for powering WSDOT traveler information systems
WSDOT INRIX Data Purchases• Statewide
– One year of historical data – Access to INRIX Analytics– Accessible by all public agencies in WA
• Southwest Region + Routes into Portland– One year of real-time data
ITE Traffic Simulation RoundtableOctober 4, 2012 7
WSDOT ATIS Evaluation Approach
• Data Collection– INRIX Speed and Travel Time– WSDOT Loop Data (PORTAL)– Probe vehicles
• Data Processing– Mapping corridor to TMC segments
• Data Analysis– Calculate average travel time and speed for corridor (1 min
intervals)– Calculate MOEs by corridor and speed bin– 0-30 bin is key
ITE Traffic Simulation RoundtableOctober 4, 2012 8
Next Steps
Project Status• TSP Pilot: “Before” data collected, RFP for installation of signal
equipt. to be awarded Nov. 13• TSMO Corridor Demonstration: Bluetooth vendor & installation
contractor in procurement• WSDOT ATIS: Preparing for probe vehicle data collection
Continue to Explore Potential Cross-Project Coordination• Use of TSMO data to perform evaluation of INRIX arterial data• Installation of Bluetooth for additional freeway evaluations
ITE Traffic Simulation RoundtableOctober 4, 2012 9
