Three zones: A, B and C
Zone A:
Gothenburg, Partille, Mölndal and Öckerö
Stops in zone A which also belong to zone B
Zone B:
Ale, Alingsås, Härryda, Kungsbacka, Kungälv, Lerum, Lilla Edet, Stenungsund and Tjörn.
Stops in zone B which also belong to zone C
Zone C:
Bengtsfors, Bollebygd, Borås, Dals Ed, Essunga, Falköping, Färgelanda, Grästorp, Gullspång, Götene, Herrljunga, Hjo, Karlsborg, Lidköping, Lysekil, Mariestad, Mark, Mellerud, Munkedal, Orust, Skara, Skövde, Sotenäs, Strömstad, Svenljunga, Tanum, Tibro, Tidaholm, Tranemo, Trollhättan, Töreboda, Uddevalla, Ulricehamn, Vara, Vänersborg, Vårgårda and Åmål.
