Estimating Bicycling and Walking for Planning and Project Development: A Guidebook (2014) / Chapter Skim
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1 S u m m a r y This guidebook is the product of NCHRP Project 08-78, a multi-year research project tasked with developing improved methods for estimating bicycling and walking for planning and project development. The project was in response to widely acknowledged needs for more robust and responsive analytic tools to support bicycle and pedestrian planning.
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2• Facility-demand models, which are constructed to directly explain count-based levels of user activity at intersections or on links through association with descriptive measures of the local environment. Given that neither group of tools addresses the types of planning and decision-making concerns listed above, NCHRP Project 08-78 was undertaken to provide such information.
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3 The key challenges in devising such an approach were as follows: • Operating at a spatial scale fine enough to articulate the factors and conditions affecting pedestrian and bicycle travel opportunities and comparison of alternatives. • Directly accounting for the interplay between the shape of the built environment (e.g., number, type, and mix of activities)
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4• GIS-Based Walk-Accessibility Model: Using data from the Metropolitan Washington (DC) Council of Governments (MWCOG)
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5 MoPeD models and the Seattle trip-based model enhancements. The procedure was developed by Portland State University for Metro, the Portland, Oregon, MPO, to improve the pedestrian mode-choice capabilities in Metro's existing trip-based model.
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6• Transportation: mode-specific network distance/travel time for walk & bike, slope/gradient, sidewalk coverage, Class 1 or Class 2 bikeway coverage and directional efficiency (turns per mile, one-way streets) , auto travel time and parking cost, transit in and out-of-vehicle time and fare.
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