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- Braga, C. K. V. Loureiro, C. F. G., Pereira, R. H. M. (2023). Evaluating the impact of public transport travel time inaccuracy and variability on socio-spatial inequalities in accessibility. Journal of Transport Geography, 109, 103590.
You can download the ungated version of this paper here.
It’s always best to read the full paper, but here’s a quick summary:
- We show that public transport accessibility analysis based on GTFS data can lead to biased estimates because of inaccuracies in scheduled levels of service and because it ignores day-to-day travel time variability.
- We also show that such biases affect some neighborhoods and socioeconomic groups more than others, which raises important implications for transport research and policy concerned with equity.
- Finally, the study introduces a method to use historical GPS data to account for inaccuracy and day-to-day variability issues in public transport GTFS data in order to overcome those issues in transportation research and policy guided by public transport accessibility analysis.
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