This European Standard defines the specific technical railway requirements for working with machines and other vehicles used for construction, maintenance and inspection of track, structures, track formation and fixed electric traction equipment as specified in EN 14033-1. This European Standard applies to all railbound machines and other vehicles - referred to as machines - working exclusively on the railway (utilising adhesion between the rail and rail wheels) and used for construction, maintenance and inspection of track, structures, infrastructure and fixed electric traction equipment. This European Standard applies to machines that are intended to operate signalling and control systems. Other similar machines are dealt with in other European Standards, see Annex M. Additional requirements can apply for working on infrastructures with narrow gauge or broad gauge lines, lines of tramways, railways utilising other than adhesion between the rail and rail wheels and underground infrastructures. This European Standard is applicable to 1 435 mm nominal track gauge. Some requirements may be applicable for working on infrastructures with nominal narrow track gauge or nominal broad track gauge lines, lines of tramways, railways utilising other than adhesion between the rail and rail wheels and underground infrastructures. This European Standard covers the safety requirements for the railway specific problems for working on different infrastructures. The application of these requirements is the object of a verification procedure, which does not form part of this European Standard, but an Annex J is included for information. In all cases an authorisation to work is required to access the infrastructure. This European Standard is also applicable for machines that in working position are partly supported on the ballast or the formation.