"Mapumental shows public transport travel times, from or to a chosen postcode, on a timebanded map. These can be embedded in websites, apps or online tools, or used for internal research purposes.
Currently, the site covers just Great Britain. We’re certainly interested in extending it to other countries, though.
Mapumental combines Ordnance Survey postcode data with public transport timetables, and displays the results using Leaflet on OpenStreetMap.
The timetable dataset is compiled with information from many sources, including local public transport information from each of the Traveline regions (known as the Traveline National Data Set, or TNDS), coach services from the national coach services database (NCSD) and rail information from the Association of Train Operating Companies (ATOC)."
- https://mapumental.com/about Mapumental About page