Commercial services on Line B1 of Metro Rome starts July 8, 2012 | Europe News Italian Metropolitana di Roma SpA (Metro Rome) has started commercial services on Line B1, an offshoot of Line B. The B1 begins at Piazza Bologna, with stops at S.Agnese/Annibaliano and Libia, and ter... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password