1. Perceived accessibility: What it is and why it differs from calculated accessibility measures based on spatial data
- Author
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Taede Tillema, Felix Johan Pot, Bert van Wee, and Urban and Regional Studies Institute
- Subjects
Geospatial analysis ,Transport planning ,Computer science ,media_common.quotation_subject ,Geography, Planning and Development ,0211 other engineering and technologies ,Transportation ,02 engineering and technology ,Perceived accessibility ,computer.software_genre ,Policy evaluation ,Perception ,0502 economics and business ,Spatial analysis ,General Environmental Science ,media_common ,050210 logistics & transportation ,Measure (data warehouse) ,Transportation planning ,05 social sciences ,021107 urban & regional planning ,Land-use planning ,Environmental economics ,Accessibility ,Conceptual model ,computer ,Transport system - Abstract
Accessibility is usually evaluated using indicators calculated from spatial data. However, perceived accessibility, defined as the perceived potential to participate in spatially dispersed opportunities, is often poorly reflected by these calculated measures. This paper sets out to explain the mechanisms that lead to these mismatches. A conceptual model is constructed to establish what factors shape perceived accessibility. A schematic framework shows that mismatches between a calculated indicator and perceptions can stem from inaccuracies in awareness as well as from inaccuracies in the measure if the measure fails to take account of the subjective evaluations of accessibility components. When evaluating the performance of land-use and transport system configurations, calculated measures based on spatial and transport data only serve as proxies for how accessibility is actually experienced. This paper argues that bringing perceived accessibility to the fore of accessibility-based planning, by acknowledging and evaluating potential mismatches with calculated accessibility indicators, will advance the evolution from mobility-based to accessibility-based planning.
- Published
- 2021