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Undivided Highway
A single carriageway (British English) or Undivided highway (American English) is a road with one, two or more lanes arranged within a one carriageway with no central reservation to separate opposing flows of traffic. A single-track road has a single lane with passing places for traffic in both directions. Road traffic safety is generally worse for high-speed single carriageways than for dual carriageways due to the lack of separation between traffic moving in opposing directions. Countries Ireland The term ''single carriageway'' is used for roads in the Republic of Ireland. Speed limits on single-carriageway roads vary depending on their classification: national primary roads and national secondary roads have a general speed limit of , while regional roads and local roads have a general speed limit of . In urban areas, the general speed limit is . United Kingdom The maximum UK speed limit for single-carriageway roads is lower than the maximum for dual-carriageway roads. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Regional Road (Ireland)
A regional road ( ga, bóthar réigiúnach) in the Republic of Ireland is a class of road not forming a major route (such as a national primary road or national secondary road), but nevertheless forming a link in the Roads in Ireland, national route network. There are over 11,600 kilometres (7,200 miles) of regional roads. Regional roads are numbered with three-digit route numbers, prefixed by "R" (e.g. R105). The equivalent road category in Northern Ireland are Roads in Northern Ireland#"B" roads, B roads. History Until 1977, classified roads in the Republic of Ireland were designated with one of two prefixes: Trunk Roads in Ireland, "T" for Trunk Roads and "L" for Link Roads. ThLocal Government (Roads and Motorways) Act authorised the designation of roads as National roads: in 1977, twenty-five National Primary roads (N1-N25) and thirty-three National Secondary roads (N51-N83) were initially designated unde Many of the remaining classified roads became Regional roads (formally ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roads In The Republic Of Ireland
The island of Ireland, comprising Northern Ireland and the Republic of Ireland, has an extensive network of tens of thousands of kilometres of public roads, usually surfaced. These roads have been developed and modernised over centuries, from trackways suitable only for walkers and horses, to surfaced roads including modern motorways. Driving is on the left-hand side of the road. The major routes were established before Irish independence and consequently take little cognisance of the border other than a change of identification number and street furniture. Northern Ireland has had motorways since 1962, and has a well-developed network of primary, secondary and local routes. The Republic started work on its motorway network in the early 1980s; and historically, the road network there was once somewhat less well developed. However, the Celtic Tiger economic boom and an influx of European Union structural funding, saw national roads and regional roads in the Republic come up to inte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roads In The United Kingdom
The United Kingdom has a network of roads, of varied quality and capacity, totalling about . Road distances are shown in miles or yards and UK speed limits are indicated in miles per hour (mph) or by the use of the national speed limit (NSL) symbol. Some vehicle categories have various lower maximum limits enforced by speed limiters. A unified numbering system is in place for Great Britain, whilst in Northern Ireland, there is no available explanation for the allocation of road numbers. The earliest specifically engineered roads were built during the British Iron Age. The road network was expanded during the Roman occupation. Some of these roads still remain to this day. New roads were added in the Middle Ages and from the 17th century onwards. Whilst control has been transferred between local and central bodies, current management and development of the road network is shared between local authorities, the devolved administrations of Scotland, Wales and Northern Ireland, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dual Carriageway
A dual carriageway ( BE) or divided highway ( AE) is a class of highway with carriageways for traffic travelling in opposite directions separated by a central reservation (BrE) or median (AmE). Roads with two or more carriageways which are designed to higher standards with controlled access are generally classed as motorways, freeways, etc., rather than dual carriageways. A road without a central reservation is a single carriageway regardless of the number of lanes. Dual carriageways have improved road traffic safety over single carriageways and typically have higher speed limits as a result. In some places, express lanes and local/collector lanes are used within a local-express-lane system to provide more capacity and to smooth traffic flows for longer-distance travel. History A very early (perhaps the first) example of a dual carriageway was the ''Via Portuensis'', built in the first century by the Roman emperor Claudius between Rome and its port Ostia at the mouth of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carriageway
A carriageway (British English) or roadway (North American English) consists of a width of road on which a vehicle is not restricted by any physical barriers or separation to move laterally. A carriageway generally consists of a number of traffic lanes together with any associated shoulder, but may be a sole lane in width (for example, a highway offramp). Description A single carriageway road (North American English: undivided highway) has one carriageway with 1, 2 or more lanes together with any associated footways (North American English: sidewalk) and road verges (North American English: tree belt). A dual carriageway road (North American English: divided highway) has two roadways separated by a central reservation (North American English: median). A local-express lane system (also called collector-express or collector-distributor) has more than two roadways, typically two sets of 'local lanes' or 'collector lanes' and also two sets of 'express lanes'. "Cars only" lanes m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Overtaking
Overtaking or passing is the act of one vehicle going past another slower moving vehicle, travelling in the same direction, on a road. The lane used for overtaking another vehicle is often a passing lane farther from the road shoulder which is to the left in places that drive on the right and to the right in places that drive on the left. Rules of overtaking In English-speaking countries On a single-carriageway/undivided-highway road, the lane used for overtaking is often the same lane that is used by oncoming traffic. An overtaking vehicle must be able to see clearly ahead of them for the entire overtaking manoeuvre plus a margin of error. For example, in New Zealand it's instructed in the Road Code that an overtaking driver must be able to see at least of clear road in front of them as they finish the passing manoeuvre. In the UK, guidance for passing and overtaking is given in rules 162-169 of the Highway Code. In some jurisdictions, the "overtaking zone" is indicated b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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