Alstom unveils Riyadh Metro trains February 9, 2017 | Middle East & Africa News Alstom has unveiled the first Metropolis driverless metro train for deployment on the Riyadh Metro system. Each train will be 36 metres long, 2.7 metres wide and have the capacity to carry 231 passeng... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password