The bidirectional rail grinding vehicle VM 8000-12E is mobile and compact. The rail grinding unit, consisting of 12 hydraulically driven, angularly adjustable grinding shafts, is suitable for corrugation grinding and reprofiling of corrugated and Vignole rails. Angle positions can be set and monitored with a touch screen. Due to compact outside dimensions, it can also easily be used in a small clearance profile. Thanks to the additionally equippable laser measuring technology, precise pre and post-measurement for quality verification and a grinding process controller for optimising the grinding process are possible.