METROREX, the operator of Bucharest Metro, has awarded Invensys Rail Dimetronic a contract to supply and install signalling and train control equipment on the 4km northern extension of Line M4 from Grivita 1 Mai to Laminorului. The signalling project, which will take a year to complete, involves equipping the line with Automatic Train Protection (ATP) and Automatic Train Operation (ATO), based on speed codes, as well as a control centre, passenger information systems, and public address systems.