In the past 15 years, Hungary's motorway network also expanded by almost 50 percent to a total of about 1,870 kilometres (1,160 miles).

Police earlier closed a section of the motorway near Roszke in southeast Hungary close to the Serbian border after the group climbed over a barrier and onto the road, which leads to the capital.

Hungary will overhaul the management of about 2,000 kilometres (1,240 miles) of its motorways and public roads, awarding a 35-year concession contract, according to a tender published on Monday in ...