Alstom to supply rolling stock, maintenance and signalling services for Mumbai Metro Line 4, India August 26, 2025 | Asia Pacific News, News Alstom has secured a contract from Larsen & Toubro (L&T) to supply rolling stock, signalling, and maintenance services for Mumbai Metro Line 4 in India. The contract covers 234 Metropolis metr... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password