A High-quality dual carriageway (HQDC) is a category of road in the Republic of Ireland. It is an all-purpose dual carriageway road type built to near motorway standards, but without motorway classification or motorway restrictions. High-quality dual carriageways have full grade-separated access and do not have junctions with minor roads. Such roads in the Republic of Ireland have been built as part of the 2000-2006 and 2007-2013 National Development Plans, including interurban routes from Dublin to other cities.
While HQDCs or roads of similar type exist in a number of countries (a British example being the A55 road in Wales), this article concentrates mainly on such roads in the Republic of Ireland.
Read more about High-quality Dual Carriageway: Specifications, HQDCs On Major Inter-Urban Routes, Redesignation As Motorway
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