Capacity Expansion in the Twin Cities: The Roads-Transit Balance

Details

• Creators:
  Davis, Gary A. ; Sanderson, Kate ; Tao, Hunwen
• Corporate Creators:
  University of Minnesota, Duluth. Department of Civil Engineering
• Corporate Contributors:
  Minnesota. Dept. of Transportation
• Subject/TRT Terms:
  • Highway capacity
  • Level of service
  • Modal split
  • Traffic congestion
  • Travel demand
  • Public transit
  • Highways
  • Planning and Forecasting
  • Public Transportation
  • I72: Traffic and Transport Planning
• Publication/ Report Number:
  MN/RC-2006-44
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Minnesota
• TRIS Online Accession Number:
  01045503
• Edition:
  Final Report
• Corporate Publisher:
  Minnesota. Dept. of Transportation
• Abstract:
  "What would it take to build our way out of congestion in the Twin Cities?" was the question posed by researchers five years ago. This previous study solved a roads-only network design problem (NDP) for the Twin Cities of Minnesota. Building on that work, another network design problem is examined for the Twin Cities metropolitan area of 3 million, to examine the tradeoff between demand side reductions and the limited access capacity expansion necessary to achieve desired levels of service. The problem is simplified by pre-determining a mode split, which allows for incorporating decreasing demand directly as an input rather than in the model formulation. The problem is solved using Sequential Linear Expansion (SLIE), a modified method of successive averages (MSA). Computation time for the large network is decreased to a reasonable length using another modification, the MSA with decreasing re-initialization (MSADR). A typical personal computer can solve this large-sized problem within 24 hours. For forecasted travel demand for 2030, it was found that if the number of trips were reduced by 20%, lane-miles needed to achieve LOS D decreases by up to 43%.
• Format:
  PDF
• Funding:
  (C) 81655 (WO) 113
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/37412/dot_37412_DS1.pdf
• File Type:
  [PDF - 355.38 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:74806fe28b586bf7f4d55f7c3dba1b3605848a0f6427f43109cf3d9352153429