An apparatus generates position signals to indicate the position of a rail-bound vehicle along a travel way throughout which travel way many markings are located. The apparatus includes at least one sensor located on the vehicle for scanning the markings and outputting signals and an evaluation unit...http://www.google.com/patents/US8118266?utm_source=gb-gplus-sharePatent US8118266 - Apparatus for generating position signals for rail-bound vehicles, in particular magnetic levitation vehicles
