A beltway (American English), ring road or orbital motorway (British English) is a circumferential highway found around many cities. Often it orginally enclosed the built up area and later
encroached upon by developed areas - and some cities have proposed or built second and even third beltways. In the United States, many beltways are part of the Interstate highway system.
... in 1983.
The initial members were the United Kingdom, France, Germany, Italy and Spain.
In 1985 France withdrew in favour of the 100% French Avions de Comb ...