A list of roads designated A1, sorted by alphabetical order of country.
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.
The A1, also known as the Great North Road, is the longest numbered road in the United Kingdom, at 410 miles (660 km). It connects London, the capital of England, with Edinburgh, the capital of Scotland. The numbering system for A-roads, devised in the early 1920s, was based around patterns of roads radiating from two hubs at London and Edinburgh. The first number in the system, A1, was given to the most important part of that system: the road from London to Edinburgh, joining the two central points of the system and linking the UK's (then) two mainland capital cities. It passes through or near north London, Hatfield, Stevenage, Baldock, Biggleswade, Peterborough, Stamford, Grantham, Newark-on-Trent, Retford, Doncaster, Pontefract, York, Wetherby, Ripon, Darlington, Durham, Gateshead, Newcastle upon Tyne, Morpeth, Alnwick, Berwick-upon-Tweed, Dunbar, Haddington, Musselburgh, and east Edinburgh.
In Great Britain, there is a numbering scheme used to classify and identify all roads. Each road is given a single letter and a subsequent number. Though this scheme was introduced merely to simplify funding allocations, it soon became used on maps and as a method of navigation. There are two sub-schemes in use: one for motorways, and another for non-motorway roads.
The National Roads and Motorways in Greece constitute the main road network of the country. These two types of roads are distinct in terms of their construction specifications. Their main difference is that motorways adhere to higher quality construction standards than National Roads.
The Brotherhood and Unity Highway, officially classed as the M-1 highway, was a highway that stretched over 1,182 km (734 mi) across Yugoslavia, from the Austrian border at Jesenice in the northwest via Ljubljana, Zagreb, Belgrade and Skopje to Gevgelija on the Greek border in the southeast. It was the main highway in the country, connecting four constituent republics and the country as a whole with neighboring highways.
A1(M) is the designation given to a series of four separate motorway sections in the UK. Each section is an upgrade to a section of the A1, a major north–south road which connects London, the capital of England, with Edinburgh, the capital of Scotland. The first section, the Doncaster Bypass, opened in 1961 and is one of the oldest sections of motorway in Britain. Construction of a new section of A1(M) between Leeming and Barton was completed on 29 March 2018, a year later than the anticipated opening in 2017 due to extensive archaeological excavations. Its completion linked the Barton to Washington section with the Darrington to Leeming Bar section, forming the longest A1(M) section overall and reducing the number of sections from five to four.
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.
Controlled-access highways in Hungary are dual carriageways, grade separated with controlled-access, designed for high speeds. The legislation amendments define two types of highways: motorways and expressways.
The motorways in North Macedonia are called avtopat and the name, like its translation in most languages, simply means auto road.
Motorways in Serbia are called auto-put, a name which simply means car-road. Roads that are motorways are categorized as state roads of IA category and are marked with one or two digit numbers. Motorways in Serbia have three lanes in each direction, signs are white-on-green, and the normal speed limit is 130 km/h (81 mph). They are maintained and operated by the national road operator company JP "Putevi Srbije".
The A1 motorway is a motorway in Serbia and at 588 kilometers (365 mi) it is the longest motorway in Serbia. It crosses the country from north to south, starting at the Horgoš border crossing with Hungary and ending at the Preševo border crossing with North Macedonia. As a part of the European route E75 and Pan-European corridor X, connecting 4 of 5 largest Serbian cities, it is the most vital part of the Serbian road network.
The A1 motorway is a motorway in North Macedonia forming part of the E75. It spans 173 kilometers (107 mi) as a four-lane, tolled, controlled-access highway. It crosses the country from north to south, starting at the border with Serbia near Kumanovo and ending at the Evzoni-Bogorodica border crossing with Greece near Gevgelija. As a part of the Pan-European corridor X, connecting to North Macedonia's biggest cities, it is one of the vital highways for Macedonian infrastructure, and significant works are currently undergoing for its reconstruction and enhancement.
Adriatic–Ionian motorway or the Blue Corridor, is a future motorway that will stretch along the entire eastern shore of the Adriatic and Ionian seas, spanning the western coast of the Balkan peninsula from Italy in the north through Slovenia, Croatia, Montenegro, Albania to Greece in the south.
This article describes the highway systems available in selected countries.