UrbanAccess: Generalized Methodology for Measuring Regional Accessibility with an Integrated Pedestrian and Transit Network

Document Type

Journal Article

Publication Date


Subject Area

place - north america, place - urban, mode - pedestrian, mode - bus, mode - subway/metro, mode - tram/light rail, ridership - modelling, planning - methods


Accessibility, network data, transit networks, pedestrian


Measures of accessibility have long been an important metric in regional transportation planning and modeling. However, new methods are needed to provide computationally efficient, multiscale, free, transparent, and customizable tools that harness open and disparate sources of transportation network data at fine spatial resolution over large geographic extents. This research presents a new open source tool, UrbanAccess, which uses a generalized and scalable methodology to measure transit accessibility with a multimodal network comprising both pedestrian and operational schedule transit networks at a fine spatial scale over large metropolitan extents. A typical use for this tool is illustrated in a case study that characterizes regional transit accessibility in the San Francisco Bay Area in California.


Permission to publish the abstract has been given by Transportation Research Board, Washington, copyright remains with them.