image of section of the a4 motorway, transmontana motorway, porto, vila real, portugal.

highway asphalt infrastructure portugal vila real tras montes transmontana motorway road roadway trip pavement line modern journey landmark building structure view europe horizontal urban vehicle way transport architecture transportation day drive auto automobile car concept construction travel crossing engineering detail sky clouds background blue cars cloudy landscape mountain move movement nature outdoor porto route scenic space speed surroundings tourism traffic tolls fees section motorway toll tax fees signage boards vehicle sign text box douro litoral coastline highway car transportation passenger signals trip europe day toll symbol movement move motoring route auto road sky transport asphalt travel speed drive way passenger view outdoor signs blue clouds cityscape