Graduate students from the MIT Transit Lab spent June 22 really getting to know the Massachusetts Bay Transportation Authority’s subway system, commonly known as “The T.” M.S.T. students William Chow, Raphael Dumas, Michael Gordon (incoming) and Katie Pincus traveled on each of the four subway lines — red, blue, green and orange — and a few buses during their 12-hour tour, which also included some sightseeing. Dumas said the students rode through 119 stations and green line stops, clocking 109 miles according to Chow’s GPS. Dumas tweeted as they rode, catching the attention of a Boston Magazine blogger who picked up the story. The MIT Alumni Association followed suit, posting its own entry on the Slice of MIT blog. The Transit Lab’s research focuses on transit policy, service and operations planning and management, and transportation modeling. Read the Boston Magazine Blog.