English: non-road mobile machinery
Welsh: peiriant symudol nad yw ar gyfer y ffordd
Subject: Cyfraith
English definition: covers a large variety of engine installations in machines used for purposes other than for passenger or goods transport. 
English context: Any mobile machine, transportable industrial equipment or vehicle with or without body work, not intended for the use of passenger- or goods-transport on the road, in which an internal combustion engine as specified in Annex I section 1 is installed.. DIRECTIVE 97/68/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 16 December 1997