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Computer-implemented method and system for designing transportation routes

  • US 6,996,507 B1
  • Filed: 10/13/1999
  • Issued: 02/07/2006
  • Est. Priority Date: 11/09/1998
  • Status: Expired due to Term
First Claim
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1. A computer-implemented method for designing transportation routes, the method comprising the steps of:

  • (a) supplying linear constraints of allowable grades to be met in respect of at least one of said transportation routes,(b) obtaining route profile 3-D coordinates showing land heights at sampled points along each of said at least one transportation route prior to construction thereof,(c) supplying cost estimates per working unit in respect of land-cut and land-fill operations, and(d) computing a height profile of said at least one transportation route which meets said constraints and for which said land-cut and land-fill operations are adjusted to give a minimum cost by replacing all non-linear constraints by equivalent linear constraints so as to render the height profile solving using standard linear programming tools.

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