United States: Ridership trends on Metropolitan Area Express (MAX) LRT, Portland, Oregon March 1, 2022 | Data & Statistics TriMet operates the Metropolitan Area Express (MAX) light rail (LRT) system, serving the Portland metropolitan area. The five MAX lines (Blue, Green, Orange, Red, and Yellow) together span 96.56 km an... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password