Wikipedia
Eurolines is a long distance coach organisation. It operates a transnational network, connecting 600 destinations, covering the whole of Europe, plus Morocco. It was founded in 1985.
Eurolines is a network of 29 co-operating coach companies from all over Europe offering partially integrated ticketing and extensive connections, rather than a single company. For example, in Great Britain Eurolines services are operated by National Express, in Northern Ireland by Ulsterbus, and in the Republic of Ireland by Bus Éireann. Eurolines headquarters are based in Brussels. Some Eurolines operators choose to compete on certain routes rather than complement each other.
Due to its decentralised approach, standards of service vary between countries. In some parts of Europe, notably the Baltic states (operated by Lux Express) and former Yugoslavia (operated by Lasta Beograd, Centrotrans, and others), Eurolines is a major method of travel between neighbouring countries. In other parts of Europe, international rail and air travel are more common and Eurolines coaches service a niche market of mainly overnight links.
Eurolines sell passes for unlimited travel between 48 European cities for either 15 or 30 days under the name Eurolines Pass. These passes do not provide access to all services, and may make booking tickets at regional offices impossible. The decentralized approach also makes administrative support difficult.