CONSULTANT SYSTRA is to design a modernisation of STC Mexico City Metro’s busiest lines-1, 2 and 3. The eight-month contract involves a technical assessment of the three lines and development of an action plan for their complete overhaul, starting in November. Systra will also produce a detailed programme of works for upgrading capacity on Line 2, where the Tasqueña interchange with STE light rail is to be rebuilt with an additional platform. The studies include assessment of new operating methods to raise capacity.