Zuid-Limburgse Stoomtrein Maatschappij (ZLSM) was founded in 1988. Seven years later ZLSM started operating a train service. ZLSM runs steam trains on the route Valkenburg - Kerkrade in the Netherlands and railbuses on the route Simpelveld (The Netherlands) - Vetschau (Germany).
|period||region / routes|
|1995 - now||Schin op Geul - Kerkrade|
|2004 - now||Simpelveld - Vetschau (Germany)|
|2004 - 2006||Kerkrade - Heerlen|
|2007 - now||Valkenburg - Schin op Geul|
The ZLSM fleet consists of Swedish and Dutch steam locomotives, Dutch and German diesel locomotives, Belgian and Dutch carriages and a German railbus.