This does not confuse drivers, since the two lines are in separate tunnels.

The station was rebuilt in the 1920s in the conventional way, with separate tunnels for each platform.

The tunnel provides 2 lanes of road going in each direction, and a separate pedestrian tunnel.

It also transferred water from the river Rukkedøla through a separate tunnel.

There was a total of nine separate through routes from one tunnel to the other.

Much of the area was widened, tracks taken out, and a junction was created at 3900 level with three separate tunnels.

The line had been planned as two separate, one-track tunnels, one each under 59th and 60th Streets.

Elsewhere, private vehicles are rare and those that are used have separate tunnels reserved for them.

The tunnel was first built as two separate tunnels which were later connected.

The escalator ride consists of two separate tunnels linked in between by a smaller hall.