The ASVi is a tramway museum in Thuin in Belgium, which specialises in the history of the Belgian narrow gaugeVicinal system. The museum includes an operating museum tram line which runs from Thuin to Lobbes.
The metre gauge historic tram line is made of two sections :
a part of the former vicinal tramway line Thuin - Anderlues (lines 91 and 92). This line was part of the famous and extensive Belgian vicinal tramway network which once covered the whole country;
a part of the SNCB normal gauge line (line 109 Mons - Chimay) which was converted to metric gauge and equipped with an overhead line for power supply.