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Dual carriageway
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A dual carriageway or a divided highway is a class of highway with carriageways for traffic travelling in opposite directions separated by a central reservation or median strip. Roads with two or more
A typical British dual carriageway with central barrier on the A63 near Hull, England
A typical British dual carriageway with central barrier on the A63 near Hull, England
Autostrada A20 runs through the island of Sicily in Italy linking Palermo to Messina
Autostrada A20 runs through the island of Sicily in Italy linking Palermo to Messina
Clara Barton Parkway outside Washington, D.C.
Clara Barton Parkway outside Washington, D.C.
Jersey barriers may be used to separate the carriageways where the space is narrow. See this example near Málaga, Spain. There is also a bus stop in t
Jersey barriers may be used to separate the carriageways where the space is narrow. See this example near Málaga, Spain. There is also a bus stop in the bottom-right corner of the picture; it would not exist in a motorway.
Single carriageway
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A single carriageway is a road with one, two or more lanes arranged within a one carriageway with no central reservation/median strip to separate opposing flows of traffic. A single-track road is a ty
Dual carriageway
…controlled access are generally classed as motorways, freeways, etc., rather than dual carriageways. A road without a central reservation is known as a single carriageway regardless of how many lanes there are. Dual carriageways have improved road traffic safety over the years and over single carriageways and typically…
The A511 in Leicestershire, England: a typical single-carriageway arterial road with one traffic lane for each direction (and, in this case, a two-way
The A511 in Leicestershire, England: a typical single-carriageway arterial road with one traffic lane for each direction (and, in this case, a two-way pedestrian and cycle way alongside)