Alternative Analysis of X-Ramp and Diamond Ramp Designs

Details

• Creators:
  Borchardt, Darrell W. ; Chin-Ping Chang, Edmond
• Corporate Creators:
  Texas Transportation Institute. Texas A&M University
• Corporate Contributors:
  Texas State Department of Highways and Public Transportation ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  • Freeways
  • Signalized intersections
  • Diamond interchanges
  • Frontage roads
  • Transportation
  • Simulation
  • Highway design
• Publication/ Report Number:
  TTI-2-3-84-335-lF
• Resource Type:
  Tech Report
• Geographical Coverage:
  Texas ; United States
• Edition:
  Final Report: September 1983 - October 1986
• Corporate Publisher:
  Texas Transportation Institute. Texas A&M University
• Abstract:
  As congestion increases on Texas urban freeways during periods of peak traffic demand, State Department of Highways and Public Transportation (SDHPT) highway design engineers are considering different methods of improving freeway operations. One problem encountered includes when and where to use an x-ramp pattern as opposed to the more conventional diamond ramp design for freeway interchanges. This report presents the results of a research study conducted by the Texas Transportation Institute (TTI) using the combined results of a field study, aerial photographic survey, and an extensive simulation analysis to evaluate the operational trade-offs of both ramp designs.
• Format:
  PDF
• Funding:
  2-8-84-335
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/84855/dot_84855_DS1.pdf
• File Type:
  [PDF - 2.15 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:81cc6b7032f00a42dc417843db8b508fb9156d54a159b179604b5f8b9d4a5b38042ae5eb63c5a19c8f2af0e214ae60fc33f2bc23b5d567bad2bd99da180d39e1