Agenda Introduction System architecture Key features Applications - PDF document

OPS Item #6 September 17, 2019 Presentation Automated Traffic Signal Performance Measures (ATSPM) in Las Vegas Gang Xie, Sr. Project Engineer RTC-FAST 9/17/2019 Agenda  Introduction  System architecture  Key features  Applications  FAST enhancements  Future enhancements 1

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 3 rd largest in the country 2

ATSPM System Architecture Email alert Key Features  Watchdog daily email alert  Split monitor  Lane by lane traffic count 3

Watchdog Daily Email Alert Detection Issue Map 4

Split Monitor Bad Detection vs Good Detection Bad detection causes max-out and force-off 10/15/2018 10/18/2018 5

Lane by Lane Traffic Count Plot Video Detection Zones for Turning Movement Counts 6

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 7

Travel Time Runs Time Space Diagram 8

Time Space Trajectories Automated Before/After Comparison 9

Featured Signal Timing Work Featured Signal Timing Work 10

Can We Address Citizen Complains? Summary  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 11

Future Enhancements and To-Do List  Upgrade to new version ATSPM 4.2  Make the watchdog smarter  Add more meaningful measures & plots Questions? 12