The R173 road is a regional road in Ireland, running its full length in County Louth. It loops around Cooley Peninsula, mainly along the coast. It nearly encircles the Cooley Mountains.
It starts at a roundabout at Ballymascanlan, just north of Dundalk, where it meets the N52 and the M1/N1 roads. It then heads east, along the northern coast of Dundalk Bay to The Bush where it veers north, past the village of Grange to Carlingford. From there it heads NW along the southern shore of Carlingford Lough, through the village of Omeath to the Northern Ireland border where it becomes the B79 into Newry, County Down.
The R173 is a former Trunk Road and was previously numbered as the T62.
The road is 32 km (20 mi) long.
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.