„INDUSI based ATP system (cab signalling system) is the most spread ATP system in the world. There are more than 16 000 railway vehicles (Locomotives, EMU’s and DMU’s) and more than 75 000 km od track equipped with INDUSI based ATP. System’s simplicity and cost effectiveness are the main reasons for its distribution on the world map. As one of the world authorities on INDUSI systems, ALTPRO is able to provide both functionally different versions of the system (I60 and PZB90) and also the whole package (infrastructure and vehicle equipment) to any infrastructure manager or railway operator in the world. Also, we are able to provide consulting and studies which will prove the system technical and economical effectiveness.