Metro Streets & Freeways Subcommitteemedia.metro.net/about_us/committees/sfs/images/sfs...Anita or...

May 17, 2018

Metro Streets & Freeways Subcommittee

Arterial Performance Measurement Pilot Program

Presenter

Presentation Notes

Shrota - Thank you for the opportunity to present the results of the final phase of the Metro Arterial Performance Measures Framework project – the Pilot Program Some background on project and intent of presentation

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

Presenter

Presentation Notes

Shrota – To get your attention – think about it – would you like to have a tool and process that allow you to save time and money while conducting your business? Review slide and types of applications/uses


1. Background 2. Pilot Program 3. Discussion and Next Steps

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Presenter

Presentation Notes

Anita or Lisa - During the next 10-15 minutes we will cover background, pilot program, results and discuss possible next steps for the Metro Framework.


Background


• 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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Presenter

Presentation Notes

Lisa or Anita – The goals for the Framework program were established in 2014 – all of the COGs and cities were involved through a comprehensive outreach program. The work to date has been in direct line with the goals….basically to develop a framework to support participating agencies in using data and mobility performance measures to monitor and report on arterial performance. The key one is highlighted is what we will be focusing on today – to provide a tool to support you in your planning efforts.


1. Framework Concept of Operations 2. Performance Measures 3. Data Sources 4. Baseline Analysis and Reports

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Presenter

Presentation Notes

Anita or Lisa - We will cover the what we mean by a Framework, what performance measures were selected, the data sources and a brief summary of a baseline conditions analysis


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Presenter

Presentation Notes

Anita or Lisa - This concept for the framework was developed and approved by the Framework Steering committee early on in the project in 2014. This diagram shows the 5 key elements of the “framework” – Each of these were discussed and included in the original Concept of Operations for the project early on. The first is the list of performance measures – the team vetted the measures with stakeholders – we will cover them in the next slide. The second component is identifying the data to support the calculation of the measures. The third part of a PM framework is to identify how the data is managed and the algorithms to use to calculate the measures. This third component also includes identifying how the data is to be stored, analyzed and used. The fourth component is the tool to be used to display and visualize the measures and use the results to conduct planning studies and possibly grant applications, etc. The final element is how the framework is used to feed into your planning process – primarily to ensure the framework can be used to assess projects, conduct before/after and justify expenditure of funds on arterial operations projects.


• 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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Presenter

Presentation Notes

Anita or Lisa - List of measures – note that the measures are both speed and volume based


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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

Presenter

Presentation Notes

Anita or Lisa - The project evaluated speed sources and determined that the 3rd party source from INRIX would be most appropriate. Metro has purchased data starting in 2017 – did not make into pilot – but could be used in future


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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)

Presenter

Presentation Notes

Anita or Lisa - The Baseline conditions was conducted for the entire Metro area. It Included relevant data within cities (other volumes)


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Presenter

Presentation Notes

Anita or Lisa - This is an example of a summary of the Baseline report – it shows all cities and main areas of performance – travel demand and productive.


Pilot Program

Presenter

Presentation Notes

Lisa


• 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

Presenter

Presentation Notes

Lisa


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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

Presenter

Presentation Notes

Lisa


• “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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Presenter

Presentation Notes

Anita - iPems can be used to evaluate what happened during major events. The “play back” feature can be used to go back in time and observe speed conditions before, during and after an event. Based on a real example…. Closure onramp to EB I-210 closed from 5am – 5pm Screenshot shows congestion on parallel arterials at 1:45pm. Clicking on EB Foothill Boulevard shows sustained slowdowns- on average 5mph- from noon to 5pm, compared to an average Thursday afternoon speed of 27 mph. You can see how, where and when the arterials are affected, the recovery, outcome on parallel facilities For example, in Lancaster, the tool could show you the implications of a crash on the 14 Freeway (i.e. 10th Street, 30th Street or Sierra Hwy) This helps to learn from past and plan better for future events


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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

Presenter

Presentation Notes

Anita or Viggen – Describe PeMS output


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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

Presenter

Presentation Notes

Anita or Viggen


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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

Presenter

Presentation Notes

Anita or Viggen


Initial Findings

Presenter

Presentation Notes

Lisa


• 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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Presenter

Presentation Notes

Lisa


Discussion and Next Steps


– 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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Presenter

Presentation Notes

Lisa


• 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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Presenter

Presentation Notes

Lisa


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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

Presenter

Presentation Notes

Lisa


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]

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