List of highways numbered 1

The following highways are numbered 1. For roads numbered A1, see list of A1 roads. For roads numbered B1, see list of B1 roads. For roads numbered M1, see List of M1 roads. For roads numbered N1, see list of N1 roads.

International

Asian Highway 1, an international route from Japan to the Turkish-Bulgarian border

European route E01 (Northern Ireland to Spain)

European route E001 (Georgia to Armenia)

Cairo–Dakar Highway

Afghanistan

Albania

National Road 1 (Albania), road running from border Montenegro (Hani i Hotit) to Tirana.

Albania–Kosovo Highway

Algeria

Algeria East–West Highway

Argentina

National Route 1, also known as Buenos Aires - La Plata Highway connects the cities of Buenos Aires and La Plata. It has a length of 50 km (31 mi).

Australia

Route 1 (Iceland)

Route 1 or the Ring Road (Icelandic: Þjóðvegur 1 or Hringvegur) is a national road in Iceland that runs around the island and connects most of the inhabited parts of the country. The total length of the road is 1,332 kilometres (828 mi). Some of the most popular tourist attractions in Iceland, such as the Seljalandsfoss and Skógafoss waterfalls, and Jökulsárlón glacier lagoon, are also on or near the Ring Road.

The ring was completed in 1974, coinciding with the 1100th anniversary of the country's settlement when the longest bridge in Iceland, crossing the Skeiðará river in the southeast, was opened.

Characteristics

For almost all its length, the road is two lanes wide: one lane going in each direction. Where it passes through larger towns, the number of lanes may be increased, as also in the Hvalfjörður Tunnel. Many smaller bridges are single lane, especially in eastern Iceland, and constructed of wood and/or steel. The road is paved with asphalt for most of its length, but there are still stretches in eastern Iceland with an unpaved gravel surface. The Iceland Road Administration, Vegagerðin, oversees the maintenance and building of both main roads and minor roads.

New Jersey Route 25

Route 25 was a major state highway in New Jersey, United States prior to the 1953 renumbering, running from the Benjamin Franklin Bridge in Camden to the Holland Tunnel in Jersey City. The number was retired in the renumbering, as the whole road was followed by various U.S. Routes - US 30 coming off the bridge in Camden, US 130 from the Camden area north to near New Brunswick, US 1 to Tonnele Circle in Jersey City, and US 1 Business (since renamed NJ 139) to the Holland Tunnel.

Route 1 largely became Route 25 in the 1927 renumbering. Route 25 was best known for the 13-mile (21 km) Route 1 Extension, which became the first controlled-access highway or "super-highway" in the United States that also connected the high traffic volume from the Holland Tunnel to the rest of New Jersey (with roads to other state destinations). The Holland Tunnel was the first vehicular connection between New York City and New Jersey that were separated by the Hudson River.

Route 1 Extension was built between 1925 - 1932 and was best known for the Pulaski Skyway. The Pulaski Skyway and portions of the currently designated Route 139 have been listed on the federal and NJ state registers of historic places since 2005 as part of a nominated portion of the Route 1 Extension.