I am inside a tunnel with tiled walls and a speed limit sign of 70 km/h. The road markings are white, and the general infrastructure looks European. The tunnel design and lighting are consistent with modern motorway tunnels found in countries like Norway or Sweden. I suspect this is in Norway due to the specific style of the tunnel signage and the clean, well-maintained appearance. I am moderately sure about this location.

Country: Norway, City: Oslo area.

then: forward

The tunnel lighting and tiled walls are very characteristic of the E18 tunnels in Oslo, Norway. The white lane markings and the specific style of the tunnel interior are consistent with the Bjørvika Tunnel or similar infrastructure in the city. The traffic is driving on the right side, which matches Norwegian road regulations. I am fairly confident this is part of the major tunnel network in central Oslo.

Country: Norway, City: Oslo.

then: guess