Geograph - photograph every grid square

Can someone with local knowledge clarify the name of the road that runs diagonally across the square?

The Explorer map says Dort Way in Gothic script, and a sign on the approach to nearby Castle Dyke also says Dort Way. This image SX9277 : Merry Pool near Castle Dyke, Haldon, Devon says Dart Way, and there is an image by Derek Harper (which I cannot now find) that refers to Port Way. Maps.live.com says Greenway Lane.

OED says that dort, usually dorts, means sulkiness, ill-humour; the sulks. But Dort does occur in placenames, especially in Germany and the Netherlands, origin unknown.

Dart Way doesn't seem right here, between the Teign and the Exe! It's unmistakeably Dort on the map - compare the D in Castle Dyke.

Port Way is convincing. It occurs up and down Britain in various places, so that's what I've opted for in my own photos of the square. But I'm very happy to be corrected.........RS