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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.
Controlled-access highway
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A controlled-access highway is a type of highway that has been designed for high-speed vehicular traffic, with all traffic flow—ingress and egress—regulated. Common English terms are freeway, motorway
Dual carriageway
…directions separated by a central reservation (BrE) or median strip (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 known as a single carriageway…
The cloverleaf interchange between US 131, M-6 and 68th Street in Cutlerville, Michigan, United States, shows many of the features of controlled-acces
The cloverleaf interchange between US 131, M-6 and 68th Street in Cutlerville, Michigan, United States, shows many of the features of controlled-access highways: entry and exit ramps, median strips for opposing traffic, no at-grade intersections and no direct access to properties.
Typical overhead signage on Ontario's King's Highway network featuring an airport pictogram, distances to upcoming interchanges, and lane guidance. Th
Typical overhead signage on Ontario's King's Highway network featuring an airport pictogram, distances to upcoming interchanges, and lane guidance. These signs have a blue background rather than the usual green to denote the local-express lanes.
An aerial view of Finnish national road 3 (E12), a motorway between Tampere and Helsinki in Finland
An aerial view of Finnish national road 3 (E12), a motorway between Tampere and Helsinki in Finland
Autostrada A1 (E35/E45) runs through Italy linking some of the largest cities of the country: Milan, Bologna, Florence, Rome and Naples
Autostrada A1 (E35/E45) runs through Italy linking some of the largest cities of the country: Milan, Bologna, Florence, Rome and Naples