Ivolga 4.0 trains enter service on MCD Line 4, Russia May 14, 2024 | Europe News, News A fleet of 18 Ivolga 4.0 trains, manufactured by Transmashholding (TMH), has entered service on Moscow Central Diameters (MCD) Line 4. The 11-car train is the fourth generation of the Ivolga platform ... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password