How this website works

tl;dr - This website uses Skebuss open data available at trafiklab.se via the GTFS Sweden 3 API.

1. Skebuss export their open public transport data to Samtrafiken.
2. Samtrafiken publishes open public transport data at trafiklab.se.
3. Trafiklab is Samtrafiken's platform for open public transport data. Where third-party developers can build new services for Swedish public transport (such as this site).
4. The Skebuss backend imports GTFS Sweden 3 data from Trafiklab and provides stops and scheduled departures through its REST API.

Read more

Wikipedia - Open data

Google - GTFS Static Overview

Google - GTFS Reference

Trafiklab - Using GTFS Files

Trafiklab - GTFS Sweden 3