The R639 road is one of Ireland's regional roads. Once designated the N8 national primary road (and before that some fractions were designated as the T6 and others as the T9), it was reclassified in stages as the R639 following the progressive opening of sections of the M8 motorway, which rendered the single carriageway N8 redundant as a national primary road. By-passed sections of the old N8 were generally reclassified as R639 as soon a new section of M8 opened, thereby increasing the length of the R639. With the completion of the M8 on 28 May 2010, the R639 now stretches from Durrow, County Laois to Cork, running through counties Laois, Kilkenny, Tipperary, Limerick and Cork.
The R639 runs parallel to the M8 from its junction with the N77 in Durrow in County Laois to the N8 on the Lower Glanmire Road 1.5 km east north of the Dunkettle Interchange on the outskirts of Cork City. North to south, it passes through Durrow, Cullahill, Johnstown, Urlingford, Littleton, Horse and Jockey, Cashel, and New Inn; and from there it runs south-west around Cahir and on through Skeheenarinky before entering County Limerick and passing through the village of Kilbeheny before veering west of Mitchelstown and proceeding south along Kilworth Mountain and through Fermoy, Rathcormack, Watergrasshill, Sallybrook and Glanmire, terminating at the N8 Lower Glanmire Road.
A List of highways numbered 981:
The 309 road is a 22-kilometre (14 mi) long gravel road between the towns of Coromandel and Whitianga in New Zealand.
The 309 winds its way from Coromandel, on the west side of the Coromandel Peninsula, over the ranges to Whitianga, on the eastern side.
The road is considered extremely dangerous and deaths among tourists unfamiliar with the road and in unfit vehicles are common.
Places of interest along the road include Waiau Falls and the Kauri Grove, a stand of mature kauri trees.
Coordinates: 36°50′48″S 175°33′15″E / 36.846767°S 175.554208°E / -36.846767; 175.554208 (309 Road - nominal location)
A 2+2 road is a specific type of dual-carriageway being built in Ireland and in Sweden and in Finland, consisting of two lanes in each direction separated by a steel cable barrier.
These roads do not have hard shoulders and therefore they cannot be designated as Motorway at some future date. The Irish variant,however, has 3.5m lanes where there are a number of Swedish variants some with 3.25m wide lanes.
Junctions are generally at-grade roundabouts and minor roads cross under or over the mainline without connecting. They are also known as "Type 2 dual-carriageways" by the Irish National Roads Authority. These roads look similar to expressways, except that expressways often have interchanges, large medians or concrete barriers between traffic. The United States has 80,000 km of roads that fit this description.
The first road of this type opened in December 2007 as a new greenfield section of the N4 national primary route which joins Dublin to Sligo.