The green tunnels' duration and frequency can vary to best support traffic conditions.

Between green tunnels, the local optimization serves the side streets and left turns.

It was Travis who led when they thrust completely through a fern wall into a green tunnel.

Nearly all light was blocked by the thick vegetation, making their world a dark green tunnel.

It felt to Grant as if they were driving through a bright green tunnel of leaves.

Sometimes in the summer you're walking through a green tunnel and you can go for miles and it's all the same.

It was like paddling through a long green tunnel.

Often, we felt as though we were stuck in a long green tunnel.

They left the great open space and returned to the green tunnels of the city.

Arching pepper trees almost met above it to form a green tunnel.