Funding for this research was provided by:
Rheinische Friedrich-Wilhelms-Universität Bonn
Article History
Received: 22 January 2024
Accepted: 20 February 2024
First Online: 22 April 2024
Compliance with Ethical Standards
:
: Map tiles by Stamen Design, under CC BY 4.0 (, 09.01.2024). Mapping data by OpenStreetMap, under ODbL 1.0 (, 09.01.2024). GTFS data under dl-zero-de/2.0 (, 09.01.2024).