(HP-65) Transit Corridor Analysis

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An extract from Transit Corridor Analysis, A Manual Sketch Planning Technique, U.S.DoT, Urban Mass Transportation Administration, Office of Planning Methods & Support, DOT-UM-UTP10, April 1979, 216 pgs.


"               ABSTRACT
     This is a user's handbook. It describes a sketch planning technique for quick first evaluations of urban transportation planning proposals …
…
               APPENDIX F
          PROGRAMS FOR HAND CALCULATORS
     This appendix contains two programs illustrating the applicability of programmable desk calculators to the manual sketch planning technique. The section of the technique chosen to illustrate this use invokes the operation of alternatives either to part or all of the work sheet of Figure 3-4.
…
     2.   A program for the Hewlett-Packard HP-65 which calculates the access integral as a function of transit distance, airline distance, walk access in the origin and destination zones and zonal attractions.

     These two programs are included to illustrate the possibilities of expediting the calculation; they are not exhaustive. Many of the steps in all three of the phases could be speeded up by the use of programmable calculators.
…
     The second of the two programs (Exhibit G.2) illustrates the use of a larger programmable desk calculator (9 addressable storage registers, 100 non-overlapping program steps, and a number of testing and branching instructions). The use of this program eliminates reference to the nomographs in calculating the access integral and should represent a considerable additional savings in time as compared with the first program … "

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