The 15-minute city around one's trajectory: Evaluating food accessibility for transit users in Stockholm, Sweden

Authors

• Kaitlyn Ng
• Cynthia Chen
• Erik Jenelius

Document Type

Journal Article

Publication Date

2025

Subject Area

place - europe, place - urban, technology - passenger information, technology - ticketing systems, land use - urban density, land use - impacts, planning - service improvement, policy - sustainable, planning - methods

Keywords

15-minute city, accessibility, affordability

Abstract

The “15-minute city” concept provides a framework for livable, sustainable cities but often overlooks human mobility, public transit, and factors beyond proximity when measuring accessibility. This study introduces an interpretable, individual-level, trajectory-based accessibility measure considering connections to amenities through the transportation system, affordability, and operating hours in addition to proximity. A case study is performed in Stockholm, Sweden. Using ST-DBSCAN, travel patterns are mined from transit smartcard data of frequent transit users to build representative trajectories. Grocery store accessibility is defined as the number of stores reachable within a 15-walk of anchors along individual trajectories. Results show residents of the dense, walkable city center have high home-based accessibility, but fewer affordable stores. Considering mobility, individuals living in rural or suburban areas with high transit connectivity observe large, positive accessibility increases. However, those living in areas with poor transit connectivity observe marginal accessibility improvements. Residents of the city center also observe marginal accessibility improvements as they already live in resource-rich areas. The trajectory-based accessibility measure can identify areas requiring accessibility improvements or evaluate policy effects (e.g., changes in transit routes) on accessibility.

Rights

Permission to publish the abstract has been given by Elsevier, copyright remains with them.

Comments

Journal of Transport Geography home Page:

http://www.sciencedirect.com/science/journal/09666923

Recommended Citation

Ng, K., Chen, C., & Jenelius, E. (2025). The 15-minute city around one's trajectory: Evaluating food accessibility for transit users in Stockholm, Sweden. Journal of Transport Geography, 127, 104283.