All traffic signs on public roads must be provided in accordance with the Traffic Signs Manual, which constitutes a Ministerial Direction to road authorities under section 95(16) of the Road Traffic Act 1961. This direction is given to road authorities for the provision and use of traffic signs.
Road signs such as STOP are internationally recognised and it is important for road safety that all traffic, including international traffic, understands regulatory signage and road markings as displayed, so as to adequately inform drivers of potential hazards ahead. The use of the Irish language on regulatory road signs in Gaeltacht areas is prescribed in Chapter 1 of the Manual. Section 1.1.52 denotes that STOP is an internationally recognised word that does not need translation.