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The M30 motorway is a Hungarian motorway that connects the M3 motorway to Miskolc. It follows the route of the D3 one-lane highway. It was opened to the public on December 2, 2004. European routes E71 and E79 follow the M30. It is planned to extend the M30 to meet the Slovak R4 expressway near the border town of Tornyosnémeti by about 2020.
You don't need and NOT ALLOWED to cross highway !