Sytral, Keolis, and Alstom launch GoA 4 ATO on Lyon Metro Line B, France July 1, 2022 | Europe News, News Sytral Mobilités (Sytral), Keolis, and Alstom have launched Grade of Automation (GoA) 4 automatic train operation (ATO) on Lyon Metro Line B as part of a EUR387 million signalling and rolling stock pr... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password