What is green dart line?

As an AI language model, I do not have up-to-date information about Green Dart Line. However, I can tell you that the phrase "Green Dart Line" can refer to a railway line or a bus route, depending on the context. It is possible that it is a public transportation service that operates primarily on a green-colored route or that it is a part of a transportation network with the word "Dart" in its name. Green-colored transportation routes are often associated with environmentally friendly choices.