Agenda Introduction System architecture Key features Applications - - PDF document

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Automated Traffic Signal Performance Measures (ATSPM) in Las Vegas 9/17/2019 Gang Xie, Sr. Project Engineer RTC-FAST

Agenda

 Introduction  System architecture  Key features  Applications  FAST enhancements  Future enhancements

OPS Item #6 September 17, 2019 Presentation

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FAST ATSPM Home Page: http://challenger.nvfast.org

Why ATSPM?

 Need arterial/signal dashboard  Make our signal smarter  UDOT free open source system  Promoted by FHWA nation wide  FAST ATSPM is the 3rd largest in the

country

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ATSPM System Architecture

Email alert

Key Features

 Watchdog daily email alert  Split monitor  Lane by lane traffic count

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Watchdog Daily Email Alert Detection Issue Map

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Split Monitor Bad Detection vs Good Detection

10/15/2018 10/18/2018

Bad detection causes max-out and force-off

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Lane by Lane Traffic Count Plot Video Detection Zones for Turning Movement Counts

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FAST Enhancements

 Smartphone app  Travel time runs  Time space diagram  Time space trajectories  Automated before & after study

Travel Time Run Smartphone Apps

iOS version Android version

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Travel Time Runs

Time Space Diagram

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Time Space Trajectories

Automated Before/After Comparison

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Featured Signal Timing Work Featured Signal Timing Work

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Can We Address Citizen Complains?

 Make signals smarter  Easily identify problems  Real time 24x7 data collection  Smartphone app can make every car as

probe vehicle

 Automated Before & After study  Work log

Summary

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 Upgrade to new version ATSPM 4.2  Make the watchdog smarter  Add more meaningful measures & plots

Future Enhancements and To-Do List

Questions?