LINEAR PROGRAMS IN URBAN AND TRANSPORTATION PLANNING: A NEW LOOK AT SAME OLD CONCEPTS

CERTAIN CONCEPTS OF EXISTING LINEAR PROGRAMMING MODELS ARE EXAMINED WITH THE AIM OF REFINING THEM. SIMPLISTIC ILLUSTRATIVE MODELS ARE EMPLOYED TO CLARIFY AND EXTEND EXISTING MODELS OF THE TRIP TO WORK AND TO INTRODUCE MATERIAL THAT INCREASES THE UTILITY OF LINEAR PROGRAMS AND URBANA TRANSPORTATION PLANNING MODELS. THE MODELS ASSUME THE EXCLUSIVE USE OF AUTOMOBILES, ONE OCCUPANT PER CAR. SHORTCOMINGS AND CONSTRAINTS OF ALL LINEAR PROGRAMS ARE LISTED AND DISCUSSED. IT IS SHOWN THAT GENERALIZED COST COEFFICIENTS (COST OF VEHICLE OPERATION, TIME, AND DISTANCE) CANNOT BE LOGICALLY SUBSTITUTED FOR EACH OTHER IN LINEAR PROGRAMS; THAT DUAL PROBLEMS HAVE A SIGNIFICANCE INDEPENDENT OF THE SIMPLEX ALGORITHM, SO THAT THE MODEL USER CAN ACQUIRE AN ADDITIONAL BODY OF INFORMATION WITHOUT ADDITIONAL COST; AND THAT INFORMATION LOSS OCCURS NOT ONLY WITHIN MODELS IF THE DUAL IS NOT CONSIDERED, BUT ALSO BETWEEN MODELS IF THE GENERALIZED COST COEFFICIENTS USED IN ANALYZING THE TRIP TO WORK ARE NOT DISTINGUISHED AND TREATED ACCORDINGLY.

  • Supplemental Notes:
    • pp 205-212, 1 FIG, 9 REF
  • Corporate Authors:

    Canadian Association of Geographers Proceedings

    ,    
  • Authors:
    • Lacava, G J
    • Wellar, B S
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00228032
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jan 18 1982 12:00AM