It also operates the train line Almelo-Mariënberg.
For buses the National Tariff System [1] applies.
Trains use rail infrastructure supplied by ProRail. For trains there is a common tariff system with the other four public transport railroad companies in the country.
See also Transportation in the Netherlands.
External link
Oddly and unfortunately, no line maps are on this site, and rare on the web in general; see a link at Roosendaal for one. However, they are posted at bus stops and can sometimes also be obtained on paper in bus information offices, sometimes in a less detailed version, e.g. without bus stops being marked.