Development of near real time performance measurements for closed-loop signal systems (CLS) using historical traffic data from existing loop detectors and signal timing data.

Details

• Creators:
  Kim, Sangkey ; Hajbabaie, Ali ; Williams, Billy M. ; Rouphail, Nagui M.
• Corporate Creators:
  North Carolina State University. Department of Civil, Construction, and Environmental Engineering
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  • Feedback control
  • Real time information
  • Performance measurement
  • Traffic signal control systems
  • Bandwidth (Traffic signals)
  • Optimization
  • Traffic signal timing
  • Traffic data
  • Recommendations
• Publication/ Report Number:
  FHWA/NC/2012-12;NCDOT RP-2012-12
• Resource Type:
  Tech Report
• Geographical Coverage:
  North Carolina
• Corporate Publisher:
  North Carolina. Department of Transportation
• Abstract:
  The overarching goal of this research project was to investigate the potential for the NCDOT Central Office Signal Timing ; (COST) Section to monitor and assess the quality of field deployed closed-loop signal system plans using the data inherent in ; the systems. The project is complete and has produced recommendations and deliverables that should enhance the COST ; Section’s ability to achieve its mission of developing and maintaining quality signal coordination plans across the state of ; North Carolina. ; Key findings and conclusions include the identification of a series of monitoring and analysis elements that can be ; implemented using the OASIS software detector and split monitor logs. In order to analyze dynamic, cycle-by-cycle ; bandwidth, a tool entitled the Dynamic Bandwidth Analysis Tool (DBAT) was developed and provided as a project ; deliverable. The DBAT tool was enhanced to provide exhaustive search optimization that identifies offset combinations that ; maximize dynamic bandwidth for a given set of split monitor log cycle-by-cycle signal indications. DBAT optimization is ; feasible for systems up to four or five intersections in length. An LP formulation was developed and tested that overcomes ; the system size limitation. The LP formulation can serve as the basis for future development of an implementable dynamic ; bandwidth optimization tool.
  More +
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/28161/dot_28161_DS1.pdf
• File Type:
  [PDF - 28.96 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:f60a2f393d449a9c0caa907cdcb643de619be864858096ecde8560975a1b6015411e8017190c8a0828bfaa651037b4a21d8d163354350eddbe5c51baabc129bf