(PC-1001) 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 …
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               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.
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     1. A program for the Sharp PC-1001 which calculates the access integral as a function of adjusted transit impedance and highway impedance and zonal attractions.
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     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.
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     The first of these two programs (Exhibit G.1) is included to illustrate the use of a medium size progrannnable desk calculator (8 addressable storage registers and 64 overlapping program steps). When this program was tested to recreate the calculation in Appendix G, it reduced the total time needed to calculate the steps involved to one-fifth of the time consumed by the direct method. The total time consumed in calculating the access integral was reduced by approximately one-half. … "

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