Accessibility Measures in Practice: A Guide for Transportation Agencies (2022) / Chapter Skim
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Pages 113-118
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E-1 This appendix provides additional detail about software and data sources that can be used to support accessibility applications. Table E-1 describes software tools that can be used to estimate accessibility measures and/or to calculate impedance.
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Name of Software Description Platform/Provider Measures and Dimensions Available Free/Paid CUBE Access (formerly Sugar Access) An ArcGIS add-on that facilitates accessibility calculations.
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Possible Data Sources Brief Introduction Secondary Dimensions Free/Paid Link Travel Mode Spatial Disaggregation Time of Day Impedances directly available Regional travel demand model skims For agencies with an available travel demand model, "skims" can easily be generated that provide origin-destination travel times, costs, and distances under different scenarios. always available for driving, often available for public transit, sometimes available for walking and bicycling usually TAZs often available for aggregate periods like the AM peak or midday Free, if available Typically available by request from state, regional, and/or local agencies Google Maps API Google Maps and Bing Maps offer APIs that can provide detailed trip itinerary information including full route details and travel times, costs, and distances.
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Possible Data Sources Brief Introduction Secondary Accessibility Dimensions Free/Paid Link Spatial Disaggregation Time of Day (operating hours) Regional TAZ-level base year and forecast land use data Transportation agencies maintain information about the land-use characteristics of their TAZs in the current year and for forecast years.
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Possible Data Sources Brief Introduction Secondary Accessibility Dimensions Free/Paid Link Spatial Disaggregation National Household Travel Survey (NHTS) The NHTS can be used to summarize accessibility outcomes for specific demographic groups at residence, workplace, or other locations.
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