Design Considerations for a Real-Time Arterial Performance Measurement System Using Bus Transit Probes

Reliable estimates of conditions on arterials are the holy grail of traffic performance measurement. The Chicago Arterial Performance Measurement System was developed by Chicago DOT and the Chicago Transit Authority to cost effectively monitor traffic conditions on arterials. CAPMS gathers and processes real-time performance data using existing infrastructure and innovative technologies to measure traffic congestion on Chicago streets. Design considerations included network segmentation, associating bus probe GPS data with segments, traffic condition algorithms, travel time estimation procedures, map displays, and modular software architecture. CAPMS is the analytical and data processing engine that drives the Chicago Traffic Tracker traveler information service. CAPMS is also a key subsystem in the design of the Chicago Traffic Management Center (TMC) Advanced Traffic Management System. Current traffic conditions on major arterials are calculated and displayed on roadway segments and for community areas throughout Chicago.


  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; Maps;
  • Pagination: 7p
  • Monograph Title: 18th ITS World Congress, Orlando, 2011. Proceedings

Subject/Index Terms

Filing Info

  • Accession Number: 01487095
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 2 2013 1:34PM