Case Study:

Montgomery County, Maryland

Methodology

Level of Effort

County planning staff used the Department's regional travel demand model, TRAVEL/2, in support of the computation of accessibility measures. TRAVEL/2 is run using INRO's EMME/2 travel demand modeling software package. The TRAVEL/2 model is considered in the upper tier of four-step models in the United States and incorporates feedback loops that modify destination, route, and mode choice based on travel time.

A number of steps were required for the accessibility analysis. In general, these steps included: 1) identification and review of accessibility measures by lay-citizen and technical peer review committees; 2) preparation of model inputs and implementation of model runs and: 3) post-processing selected model results to produce accessibility measures. Geographic information systems (GIS) were used to create buffers around fixed-guideway transit stations in the county for the calculation of the transit accessibility measures. In addition, spreadsheet and database management software packages were used for the post-processing of model results.

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