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 autostrade are roads forming the Italian national system of motorways. The total length of the system is about 7,016 kilometres (4,360 mi), as of 30 July 2022. To these data are added 13 motorway spur routes, which extend for 355 kilometres (221 mi).
The Autostrada A56, more commonly known as the Tangenziale di Napoli, is a controlled access toll road bypassing the urban center and suburban developments of Naples, Italy — connecting the SS7 near Arco Felice/Pozzuoli at the west to the A1 Autostrade at the east, with a total length of 20.2 km. The most eastward section, from Junction 3 at Doganella to the A1, is toll-free.
The Autostrada A26 is a motorway in the northwestern Italian regions of Liguria and Piedmont. It is named the Autostrada dei Trafori after the numerous tunnels through which it passes, both Apennine and Subalpine. It runs northwards from Genoa on the Ligurian coast, over the Apennines, and across the wide plain of the Po valley to the environs of Lake Maggiore and the mouth of the Val d’Ossola. In addition to this ‘main trunk’ of the road, there are three side branches, also of motorway class which function as link roads between the A26 and the A7, the A4 and the A8. The A26, together with these link roads, is managed by Autostrade per l'Italia S.p.A.
The Autostrada A4, or Autostrada Serenissima, is an autostrada 523.1 kilometres (325.0 mi) long in northern Italy which connects Turin and Trieste via Milan and Venice crossing the entire Po Valley from west to east. The city of Venice originally formed a bottleneck on the A4, but is now bypassed by the Passante di Mestre. The A4 passes just north of the city of Milan, where it is toll-free.
The Autostrada A5 or Autostrada della Valle d'Aosta, in French Autoroute de la Vallée d'Aoste, is an autostrada, which connects Turin and the Aosta Valley to France via Ivrea, through the Mont Blanc Tunnel, in northern Italy.
The Autostrada A6 or La Verdemare is an autostrada 124.3 kilometres (77.2 mi) long in northern Italy opened in 1960 which connects Turin, the southernmost area of Piedmont, especially the Cuneo province, to the west coast of Liguria and the city of Savona. Its construction finished in 2001, when it was completely overhauled into a two-road motorway
The Autostrada A8 or Autostrada dei Laghi is an autostrada 43.6 kilometres (27.1 mi) long in northern Italy connecting Milan to Varese and connecting Milan to Gallarate and Sesto Calende on Lake Maggiore and on Lake Monate.
The Autostrada A10 or Autostrada dei Fiori is an autostrada 158.1 kilometres (98.2 mi) long in northern Italy, passing through Liguria and connecting Genoa and Ventimiglia to France. It connects to the French A8 autoroute, which finishes in Aix-en-Provence, and forms part of European route E80.
The Autostrada A21 or Autostrada dei Vini is an autostrada 238.3 kilometres (148.1 mi) long which connects Turin to Brescia, through the Po Valley and the city of Piacenza. It was inaugurated in 1968. It is nicknamed the "Wines Motorway" because it runs through many famous wine areas.
Expressway S3 or express road S3 is a Polish highway, which is planned to run from Świnoujście on the Baltic Sea through Szczecin, Gorzów Wielkopolski, Zielona Góra and Legnica, to the border with the Czech Republic, where it will connect to the planned D11 motorway. The total intended length is 470.6 km (292.4 mi), of which 404.7 km (251.5 mi) is open to traffic and 65.9 km (40.9 mi) is under construction as of March 2024.
This article describes the highway systems available in selected countries.
The A3 motorway is a partially built motorway in Romania, planned to connect Bucharest with the Transylvania region and the north-western part of the country. It will be 596 km long and will run along the route: Ploiești, Brașov, Făgăraș, Sighișoara, Târgu Mureș, Cluj-Napoca, Zalău and Oradea, connecting with Hungary's M4 motorway near Borș.
The Autostrada A22 or Autobrennero or Autostrada del Brennero is one of the most important autostrada in Italy, as it connects Po Valley, the city of Modena and the Autostrada A1 to Austria through the Brenner Pass, located in the municipality of Brenner. The Autostrada A22 is 315 kilometres (196 mi) long. The operator of the road is Autostrada del Brennero S.p.A.
The Bucharest Ring Motorway, termed A0, is a motorway ring in construction around the city of Bucharest, the capital of Romania. It is intended to be the outer ring to the existing Bucharest Ring Road.
Controlled-access highways in Romania are dual carriageways, grade separated with controlled-access, designed for high speeds. There are two types of highways, motorways and expressways, with the main difference being that motorways have emergency lanes and slightly wider lanes. The maximum allowed speed limit for motorways is 130 km/h (81 mph), while for expressways the limit is 120 km/h (75 mph). There are no toll roads, but a road vignette is required.
Milano Serravalle – Milano Tangenziali S.p.A. is an Italian transport company. The company owned the concession until 2028 on Milan to Serravalle Scrivia section of Autostrada A7, as well as the concession of the ring roads or bypass road surrounding Milan. The company was the holding company of Autostrada Pedemontana Lombarda, the operator of A36.
Autostrada A50, also called tangenziale Ovest di Milano, is a motorway that connects the suburban area of Milan from south-east to north-west, managed by Milano Serravalle – Milano Tangenziali.
Autostrada A51, also called tangenziale Est di Milano, is a motorway tangent to the city and suburban area of Milan in its eastern part, managed by Milano Serravalle – Milano Tangenziali.
