Alstom delivers second X’Trapolis EMU to PRASA March 1, 2016 | Middle East & Africa News Alstom has delivered the second of the 600 X'Trapolis Mega six-car commuter electric multiple units (EMUs) to the Passenger Rail Agency of South Africa (PRASA) for testing. Three of the train cars in ... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password