Evaluation of Adaptive Control Strategies for NJ Highways

In this project, a prototype knowledge-based expert system (KBES) integrated with a Geographic Information System (GIS) is developed. Geomedia Pro is used as the GIS interface for data entry. A software bridge is also implemented to ensure swift data exchange between Synchro, which is a commercial signal optimization software package used by the New Jersey Department of Transportation (NJDOT), and the developed prototype. This integration will allow the users to transfer intersection data between Synchro and the prototype KBES tool in an efficient way. The rule base of the prototype KBES was developed using the information that exists in the literature, including surveys conducted by other researchers and the simulation studies conducted by the Rutgers research team. The performance of three distinct adaptive control strategies were assessed by using a macroscopic and a microscopic simulation tool namely, PARAMICS. Prototypes for reactive (SCOOT-like), case-based/reactive (SCATS-like) and proactive/predictive (OPAC-like algorithms), each using a different control logic, were developed. These prototypes were tested for various well-calibrated New Jersey intersections. The outcome of these simulation studies was then used to develop general rules in terms of the effectiveness of using adaptive control strategies under various network and traffic conditions. The developed rule base was implemented in Visual Basic and integrated with the developed prototype. The prototype also has the capability of performing interactive macroscopic simulation of OPAC-like, SCOOT-like, and SCATS-like control strategies given the intersection and traffic characteristics. This feature was added to the KBES system to enable the user to further analyze each individual intersection. Finally, a benefit-cost analysis function is implemented and integrated to further support the decision making process. In short, the developed tool provides the NJDOT traffic engineers and decision makers with a user-friendly suite of tools to guide them in identifying the most suitable intersections for adaptive control and in accurately assessing the potential benefits over existing control.

• Record URL:
  http://www.state.nj.us/transportation/business/research/reports/FHWA-NJ-2006-001.pdf
• 
• Summary URL:
  http://www.nj.gov/transportation/business/research/reports/FHWA-NJ-2006-001-TB.pdf
• Corporate Authors:

  Center for Advanced Infrastructure and Transportation

  Rutgers University
  100 Brett Road
  Piscataway, NJ  United States  08854-8058

  New Jersey Department of Transportation

  Division of Research and Technology, P.O. Box 600
  Trenton, NJ  United States  08625-0600

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Ozbay, Kaan
  • Boile, Maria
  • Doshi, Harsh
  • Mudigonda, Sandeep
  • Chen, Jihong
  • Bongiovanni, Tom
  • Shah, Jignesh
  • Desai, Jvot
• Publication Date: 2006-1

Language

• English

Media Info

• Media Type: Web
• Edition: Final Report
• Features: Appendices; Figures; References; Tables;
• Pagination: 253p

Subject/Index Terms

• TRT Terms: Adaptive control; Algorithms; Benefit cost analysis; Decision making; Expert systems; Geographic information systems; Prototypes; Signalized intersections; Traffic signal control systems
• Identifier Terms: Paramics (Computer program); Synchro (Computer program)
• Uncontrolled Terms: Data transfers; Macroscopic simulation
• Geographic Terms: New Jersey
• Subject Areas: Bridges and other structures; Highways; Operations and Traffic Management; I73: Traffic Control;

Filing Info

• Accession Number: 01029080
• Record Type: Publication
• Report/Paper Numbers: FHWA-NJ-2006-001
• Files: TRIS, USDOT, STATEDOT
• Created Date: Jul 17 2006 3:46PM