While my Department is responsible for general legislation in regard to traffic matters, it has no direct role in relation to the erection of road signage, which is a matter for the relevant local authority. However, the 2010 Traffic Signs Manual, which constitutes a Direction of the Minister for Transport, Tourism and Sport, provides local authorities with detailed guidance in relation to the design rules and their application to road signs, as well as regarding the placement of road signs for use on motorways, national, regional and local roads in Ireland. Transport Infrastructure Ireland has overall responsibility for the planning and supervision of works, including signposting, on the national road network.