Application of Diamond Interchange Control Strategies at Closely Spaced Intersections

Signalized diamond interchanges are one of the most common interchange types in U.S. urban areas. Special signal control strategies have been developed for diamond interchanges to address their unique traffic flow and geometric characteristics such as tight spacing and one-way cross streets. The application of diamond interchange signal control strategies on a site consisting of six closely spaced intersections in Reno, Nevada, is documented. These intersections represent or closely resemble a standard diamond interchange. Advance control strategies are derived on the basis of diamond interchange signal control schemes. Simulation results of the timing strategies indicate significant reductions in the number of stops; however, no significant change is found for overall travel time and delay for the study site. Because the proposed control strategies emphasize maximum progression between closely spaced paired signals, the external approaches normally experience increased delay and stops. The proposed control is considered more efficient than the existing control because of significant reduction in stops and much improved driving experience and drivers’ expectations. Public reaction to the new timings has been positive. Similar applications could be easily adopted at other locations with similar site characteristics. The proposed control enhances the knowledge of traffic signal control and coordination for closely spaced intersections.

• Record URL:
  https://doi.org/10.3141/2035-04
• 
• Summary URL:
  http://scholar.google.com/scholar_lookup?title=Application+of+Diamond+Interchange+Control+Strategies+at+Closely+Spaced+Intersections&author=Z.+Tian&author=T.+Urbanik&author=R.+Gibby&publication_year=2007
• Availability:
  • Find a library where document is available. Order URL: http://www.trb.org/Main/Public/Blurbs/156835.aspx
• Authors:
  • Tian, Zong Z
  • Urbanik II, Thomas
  • Gibby, Reed
• Publication Date: 2007

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 32-39
• Monograph Title: Traffic Signal Systems and Regional Transportation Systems Management 2007
• Serial:
  • Transportation Research Record: Journal of the Transportation Research Board
  • Issue Number: 2035
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Diamond interchanges; Signalized intersections; Traffic delays; Traffic signal control systems; Traffic signal timing; Travel time; Urban areas
• Geographic Terms: Reno (Nevada)
• Subject Areas: Highways; Operations and Traffic Management; I73: Traffic Control;

Filing Info

• Accession Number: 01049368
• Record Type: Publication
• ISBN: 9780309104623
• Files: TRIS, TRB, ATRI
• Created Date: Feb 8 2007 4:49PM