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A Model for Analyzing Large Transportation Networks on a Microcomputer

by Foster Nichols, Jr., Parsons Brinckerhoff Quade &, Douglas Inc, New York, NY, USA,



Document Type: Proceeding Paper

Part of: Microcomputer Applications in Transportation II

Abstract:

The Pedestrian Level of Service (PEDLS) model combines the best features of spreadsheet programs - their ease of use for inputting data and producing printed output reports - with the calculation speed and computational capacity of more complex simulation models. Spreadsheet templates are used to enter input data and assumptions. Output tables presenting pedestrian flow and level of service calculations are also generated from spreadsheets. The intermediate programs which perform the major part of the analysis are written in BASIC and are activated from the operating system. The model is composed of several independently-activated programs and can be used to test, in a short amount of time, a wide variety of alternative assumptions and configurations. The program allows the user to select a multipath or minimum path trip assignment algorithm.

Subject Headings: Computer models | Spreadsheets | Simulation models | Pedestrians and cyclists | Data analysis | Network analysis | Critical path method

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