International
AH2 Asian Highway 2, an international road from Indonesia to Iran 
E2 European route E2 
E002 European route E002 -
Trans-Sahara Highway
The following highways are numbered 2. For roads numbered A2, see list of A2 roads. For roads numbered B2, see the list of B2 roads. For roads numbered M2, see list of M2 roads. For roads numbered N2, see list of N2 roads.
AH2 Asian Highway 2, an international road from Indonesia to Iran 
E2 European route E2 
E002 European route E002 
Trans-Sahara Highway 
Thailand Route 2 (Mittraphap Road)
SH-2 Highway in Albania from Tirana to Durrës.
A2 motorway 
National Road 2 (EO2)
National Road 2 (R2) 
M2 highway (M2/E584) is a national road with highway status. This route leaves Chișinău, via Orhei and the route arrives at Soroca, on the border with Ukraine
National road 2 (DK2) 
Motorway of Freedom (A2/E30) 
expressway S2, Southern Warsaw Bypass
Alberta Highway 2 (including the Queen Elizabeth II Highway)
British Columbia Highway 2 
Manitoba Highway 2 
New Brunswick Route 2 (part of the Trans-Canada Highway)
Newfoundland and Labrador Route 2 
Northwest Territories Highway 2 
Nova Scotia Trunk 2 
Ontario Highway 2 (almost entirely removed from the network)
Prince Edward Island Route 2 
Quebec Route 2 (former)
Saskatchewan Highway 2 
Yukon Highway 2 
Interstate 2 
Interstate A-2 (Alaska; unsigned)
Interstate H-2 (Hawaii)
U.S. Route 2 
U.S. Route 2N (former)
U.S. Route 2S (former)
New England Interstate Route 2 (former)
Alabama State Route 2 
Alaska Route 2 
Arkansas Highway 2 (former)
California State Route 2 
Colorado State Highway 2 
Connecticut Route 2 
Delaware Route 2 
Florida State Road 2 
Georgia State Route 2 
Illinois Route 2 
Indiana State Road 2 
Iowa Highway 2 
K-2 (Kansas highway) 
Kentucky Route 2 
Louisiana Highway 2 
Louisiana State Route 2 (former)
Maryland Route 2 
Massachusetts Route 2 
County Road 2 (Goodhue County, Minnesota) Mississippi Highway 2 
Missouri Route 2 
Missouri Route 2 (1922) (former)
Montana Highway 2 
Nebraska Highway 2 
Nevada State Route 2 (former) 
Nevada State Route 2B (former)
Nevada State Route 2C (former)
New Jersey Route 2 (former) 
New Mexico State Road 2 
New York State Route 2 
County Route 2 (Allegany County, New York) County Route 2 (Chemung County, New York) County Route 2 (Chenango County, New York) 
County Route 2 (Clinton County, New York) County Route 2 (Columbia County, New York) County Route 2 (Delaware County, New York) 
County Route 2 (Dutchess County, New York) 
County Route 2 (Erie County, New York) 
County Route 2 (Essex County, New York) 
County Route 2 (Franklin County, New York) County Route 2 (Genesee County, New York) County Route 2 (Lewis County, New York) County Route 2 (Madison County, New York) County Route 2 (Monroe County, New York) 
County Route 2 (Nassau County, New York) County Route 2 (Niagara County, New York) County Route 2 (Oneida County, New York) County Route 2 (Onondaga County, New York) County Route 2 (Ontario County, New York) County Route 2 (Oswego County, New York) 
County Route 2 (Rensselaer County, New York) County Route 2 (Steuben County, New York) 
County Route 2 (Suffolk County, New York) 
County Route 2 (Washington County, New York) 
County Route 2 (Yates County, New York) 
North Carolina Highway 2 
Ohio State Route 2 
Oklahoma State Highway 2 
Oregon Route 2 (former)
Pennsylvania Route 2 (former)
Rhode Island Route 2 
South Carolina Highway 2 
Tennessee State Route 2 
Texas State Highway 2 (former) 
Utah State Route 2 (former)
Vermont Route 2B 
Virginia State Route 2 
Washington State Highway 2 (former)
West Virginia Route 2 
M2 Hills Motorway Lane Cove Tunnel 
Windsor Road (Sydney) 
Gold Coast Highway (Queensland, New South Wales) (future 
) Namatjira Drive
Warrego (
Toowoomba Bypass), Landsborough, and Barkly Highways (Queensland)
Warrego and Mitchell Highway Gold Coast Highway (Queensland, New South Wales)
Brisbane Tullamarine Freeway (Melbourne)
CityLink Tolled Freeway State Route 2 (Western Australia) – Mitchell Freeway, Kwinana Freeway, and Forrest Highway | Preceded by 1 | Lists of highways 2 | Succeeded by 3 |
A highway is any public or private road or other public way on land. It includes not just major roads, but also other public roads and rights of way. In the United States, it is also used as an equivalent term to controlled-access highway, or a translation for motorway, Autobahn, autostrada, autoroute, etc.
A ring road is a road or a series of connected roads encircling a town, city or country. The most common purpose of a ring road is to assist in reducing traffic volumes in the urban centre, such as by offering an alternate route around the city for drivers who do not need to stop in the city core. Ring roads can also serve to connect suburbs to each other, allowing efficient travel between them.
A spur route is a short road forming a branch from a longer, more important road such as a freeway, Interstate Highway, or motorway. A bypass or beltway is not considered a spur route as it typically reconnects with another or the same major road.
Metroads were the primary road routes serving the Sydney and Brisbane metropolitan areas from the 1990s to the early 2010s. The Metroads formed a network of radial and circumferential routes throughout the cities, simplifying navigation. Metroads have been progressively phased out in both Sydney and Brisbane, replaced by alphanumeric route numbers. Brisbane is the only city currently retaining the Metroad system.
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, and expressway. Other similar terms include throughway or thruway and parkway. Some of these may be limited-access highways, although this term can also refer to a class of highways with somewhat less isolation from other traffic.
This article describes the highway systems available in selected countries.
