Railways Economiques de Liège-Seraing et Extensions 21/08/1881 — 27/08/1961: R.E.L.S.E (Railways Economiques de Liège-Seraing et Extensions)
28/08/1961 — 22/03/1964: S.T.I.L.S. (Société des Transport Intercommmunaux de Liège-Seraing)
23/03/1964 : S.T.I.L. (Société des Transport Intercommmunaux de la region Liègeoise)
Railways Economiques de Liège-Seraing et Extensions 15/05/1936 — 27/08/1961: R.E.L.S.E (Railways Economiques de Liège-Seraing et Extensions)
28/08/1961 : S.T.I.L.S. (Société des Transport Intercommmunaux de Liège-Seraing)
The company wanted to demonstrate that it was able to convert buses into trolleybuses very quickly in the event of an emergency. The project was successful, but the emergencies never occurred.