General This European Standard deals with the technical requirements to minimize the specific railway hazards of self-propelled road-rail machines as defined in prEN 15746-1:2015@ 3.5@ henceforward referred to as machines ?C when designed and intended for running on European railways within the scope of European Directive 2007/58/EC. The running mode is an option designed by the manufacturer which permits the use of the machine on a specified railway infrastructure without the need for special operational rules. NOTE The use of special track safety equipment (i.e. part of automatic train protection systems) does not necessarily infer that the machine has a running mode@ some infrastructure managers use such equipment as means of protection for machines in travelling and/or working modes. This European Standard does not apply to the following: ?? the specific requirements established by the machine operator for the use of machines@ which will be the subject of negotiation between the manufacturer and the infrastructure manager; ?? travelling and working both on and off rails; ?? running on urban rail. For a road-rail machine it is assumed that an EU road permissible host vehicle will offer an accepted safety level for its designed basic functions before conversion. Unless explicitly stated otherwise in a particular clause this specific aspect is not dealt with in this European Standard.