Details:

• Creators:
  Kane, Martin R. ; Kone, Caroline M. ; Eagle, William Andrew

  Kane, Martin R. ; Kone, Caroline M. ; Eagle, William Andrew Less -
• Corporate Creators:
  University of North Carolina at Charlotte. Department of Civil and Environmental Engineering
• Subject/TRT Terms:
  [+]

  Evaluation Highway Planning Highway Planning--North Carolina Interchanges Intersections Roads--North Carolina--Interchanges And Intersections Traffic Signals Traffic Signs Traffic Signs And Signals--North Carolina--Evaluation
• Publication/ Report Number:
  FHWA/NC/2006-45
• Resource Type:
  Tech Report
• Geographical Coverage:
  North Carolina
• Edition:
  Final report; July 2005-Mar. 2007.
• Corporate Publisher:
  North Carolina. Department of Transportation. Research and Analysis Group
• Abstract:
  The purpose of this research effort is to evaluate unique intersection designs for their suitability for use in lieu
  
  of an existing or proposed traffic signal. Traffic signals can cause unnecessary delay and capacity restrictions
  
  due to the operational characteristics of signalized intersections. This project identified alternative intersection
  
  (interchange) designs that could be implemented at signalized intersections that would serve the current traffic
  
  and also provide a higher capacity for the main traffic movement. Analyses were conducted primarily using
  
  SYNCHRO 6 software from Trafficware Ltd. To model the different intersection/interchange designs identified
  
  for analysis. Eight designs were selected for in-depth analysis: Continuous Flow, Center –Turn Overpass,
  
  Echelon, Median U-turn, Michigan Diamond, Quadrant, SPUI, and Tight Diamond. While the Tight Diamond
  
  performed very well in the simulation, the consensus of experienced traffic engineers (Thrower, Naylor, et al.)
  
  was that there were errors in the simulation that resulted in much better than expected results. Further analysis
  
  will be conducted on this design, not related to this project, to see if the problem can be identified. Because of
  
  the lack of confidence in the Tight Diamond results, the Tight Diamond will not be included in the
  
  recommendations. When the different designs were evaluated at selected locations in different areas of the
  
  state, the lower cost designs usually prevailed based on predicted traffic levels and construction costs. The
  
  evaluated designs did indicate a significant increase in capacity when compared to a “regular” signalized
  
  intersection.
  
  
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  [+]

  urn:sha256:c2d8b7d37095038f9642f3065aea650656a7da44df29607537665408c0147205
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/17476/dot_17476_DS1.pdf
• File Type:
  [PDF-3.69 MB]