Metro Streets & Freeways Subcommitteemedia.metro.net/about_us/committees/sfs/images/sfs...Anita or...
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May 17, 2018
Metro Streets & Freeways Subcommittee
Arterial Performance Measurement Pilot Program
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Arterial Performance Measurement Pilot
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Conduct a Corridor Study
Justify need for upgrading a signal
system
Develop a state of the system arterial report for
your region
Do a Before/After study
Evaluate response to
an event Prioritize projects
Address Council or stakeholder
technical questions
Access data quickly
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Arterial Performance Measurement Pilot
1. Background 2. Pilot Program 3. Discussion and Next Steps
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Arterial Performance Measurement Pilot
Background
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Arterial Performance Measurement Pilot
• Goals of the Program: – Establish framework to support future deployment of operational
improvements by participating agencies – Monitor and report on mobility performance on arterial corridors – Measure effectiveness of Arterial Transportation System Management
improvements after they are in place – Develop a continuous data source and archive available over time for cities
to use for project planning and grant applications – Provide useful tools to support local agency and sub-regional operations and
planning efforts – Develop consistent methods for mobility performance measures
calculations and reporting
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Arterial Performance Measurement Pilot
1. Framework Concept of Operations 2. Performance Measures 3. Data Sources 4. Baseline Analysis and Reports
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Arterial Performance Measurement Pilot
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Arterial Performance Measurement Pilot
• On all links and routes • Speed • Travel time (average and reliability) • Travel time index • Travel time delay • Level of Service (link-based HCM methods)
• On links and routes with volume data • Vehicle- and person-miles travelled • Vehicle- and person-hours travelled • Vehicle-hours of delay (relative to different threshold speeds)
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Arterial Performance Measurement Pilot
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• INRIX 3rd Party Speed Data • Data is collected from GPS in vehicles and mobile devices • Processed into 1-minute average link speeds • From San Gabriel Valley Subregion • Data time period: July 1, 2014 – December 31, 2016 • Major arterials and freeways • Link segmentation is INRIX XD segments. On arterials, typically one
or more links from intersection-to-intersection
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Arterial Performance Measurement Pilot
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• Baseline Conditions Analysis Traffic Volume Profiles • About 200 arterial corridors • Over 360 manual field tube counts in March 2017 • Received recent count data from many local agencies • Purchased recent counts already conducted by a vendor (about 150
locations) • Aggregate and average data summarized by sub-segments (city,
subregion, county)
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Arterial Performance Measurement Pilot
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Arterial Performance Measurement Pilot
Pilot Program
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Arterial Performance Measurement Pilot
• Evaluate and test an Arterial Performance Monitoring Tool to assess arterial network performance
• Conduct a pilot test based on a subregion in LA County
• Utilize comprehensive arterial volume and travel time data
• Collect user group input and assessment
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• Demonstrate application for other subregions
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Arterial Performance Measurement Pilot
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• Accessible at – lametro.iteris-pems.com
• Demonstration available until end of December 2018
• Evaluates performance of arterials using various metrics
• Pilot region: San Gabriel Valley arterials
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Arterial Performance Measurement Pilot
• “Play back” speed conditions on any day in the past
• Closure of EB I-210 due to crash on 12/22/16 caused significant slow-downs on parallel arterials
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Arterial Performance Measurement Pilot
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• Plot of hourly vehicle-hours-of-delay (measured relative to the free-flow speed) on NB Rosemead Avenue in September 2016
• Delay peaks on 9/26/16 at 8:00 AM
• iPeMS lets you summarize data at the 5-minute, 15-minute, hourly, and daily levels
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Arterial Performance Measurement Pilot
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• Contour plots visualize speeds for an entire day along a route
• Text overlays indicate which intersections are seeing the biggest slowdowns and when during the day they happen
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Arterial Performance Measurement Pilot
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• Summarize travel time changes from month-to-month
• Example of weekday PM peak hour travel times decreasing between October and December 2016
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Arterial Performance Measurement Pilot
Initial Findings
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Arterial Performance Measurement Pilot
• Surveys distributed in March 2018 to assess usability and usefulness of analytic tool
• All participants found tool highly functional and relatively easy to use.
• Majority stated they would use the tool for internal reports; around 50% would use the tool for other applications (e.g., staff reports to council, grant applications, project development and public meetings).
• Majority would likely use the tool each month.
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Arterial Performance Measurement Pilot
Discussion and Next Steps
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Arterial Performance Measurement Pilot
– Westside Cities COG 5/2/18 – North County TC 5/14/18 – Metro Streets & Freeways Subcommittee 5/17/18 – San Gabriel Valley COG TAC 5/21/18 – LA County 5/23/18 – City of LA/Caltrans D7 5/23/18 – Gateway Cities COG 5/24/18 – SCAG 6/4/18 – South Bay Cities IWG 6/13/18
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Arterial Performance Measurement Pilot
• Present Pilot Program and initial findings to LA County subregions (May and June 2018)
• Develop sample application scenarios of tool • Pilot Program demonstration available until
December 31, 2018 Interested in the Tool? Please provide us with a
contact name.
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Arterial Performance Measurement Pilot
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Conduct a Corridor Study
Justify need for upgrading a signal
system
Develop a state of the system arterial report for
your region
Do a Before/After study
Evaluate response to
an event Prioritize projects
Address Council or stakeholder
technical questions
Access data quickly
![Page 25: Metro Streets & Freeways Subcommitteemedia.metro.net/about_us/committees/sfs/images/sfs...Anita or Viggen – Describe PeMS output. Arterial Performance Measurement Pilot . 17 •](https://reader036.fdocuments.net/reader036/viewer/2022062609/60fc08af69bd4108f01c25aa/html5/thumbnails/25.jpg)
Arterial Performance Measurement Pilot
Eva Pan LA Metro, Highway Program (213) 418-3285 [email protected]
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Shrota Sharma LA Metro, Highway Program (213) 418-3058 [email protected]
Lisa Young TransLink Consulting, LLC (714) 768-5242 [email protected]
Anita Vandervalk Iteris (850) 570-5906 [email protected]