MULTI-OBJECTIVE OPTIMIZATION OF INTERSECTION AND ROADWAY ACCESS DESIGN

Poor site design of driveway access and intersection points is a major cause of accidents and traffic congestion. The reasons such poor designs are permitted to occur often can be attributed to lack of concern before major growth occurs in adjacent development and traffic volumes; developer and political pressure, especially where there is a lack of consistent design regulations; a lack of knowledge of design criteria; and focusing on only one of several measures of effectiveness. This research developed a methodology to optimize roadway access intersection design using an expert system to guide design in accordance with published criteria; a graphical multi-criteria evaluation system, which revealed marginal impacts of changing design parameters across three objective functions (delay, safety, and cost); and intelligent techniques, which suggested design parameter changes and found optimal solutions. Access intersection designs, exhibiting different roadway characteristics, were analyzed at three sites. Optimal designs were developed by the decision support system by changing several design parameters -- lanes, turn lanes, control devices, signal timing/phasing, and intersection spacing. For each case, the tradeoffs between the different objective functions were shown.

• Record URL:
  https://ntlrepository.blob.core.windows.net/lib/20000/20300/20341/PB98122955.pdf
• Record URL:
  https://www.ugpti.org/resources/reports/details.php?id=428
• 
• Supplemental Notes:
  • Sponsored by a grant from the U.S. Department of Transportation, University Transportation Centers Program.
• Corporate Authors:

  Utah State University, Logan

  Utah Transportation Center
  Logan, UT  United States  84321

  Utah Department of Transportation

  4501 South 2700 West
  Salt Lake City, UT  United States  84114-8410

  Mountain-Plains Consortium

  North Dakota State University
  Fargo, ND  United States  58108
• Authors:
  • Taber, J T
• Publication Date: 1998-1

Language

• English

Media Info

• Media Type: Digital/other
• Features: Appendices; Figures; References; Tables;
• Pagination: 76 p.

Subject/Index Terms

• TRT Terms: Access; Alternatives analysis; Design; Driveways; Expert systems; Graphics; Intersections; Optimization
• Uncontrolled Terms: Design features; Graphical analysis
• Old TRIS Terms: Intelligent techniques
• Subject Areas: Design; Highways; Planning and Forecasting; I21: Planning of Transport Infrastructure;

Filing Info

• Accession Number: 00748691
• Record Type: Publication
• Report/Paper Numbers: MPC Report No. 98-90
• Files: UTC, NTL, TRIS, ATRI, STATEDOT
• Created Date: May 8 1998 12:00AM