At present the drivers are under going line of sight training.
At present the system (on Phase 1 at least, i.e. Alty to Bury) block signalling is utilised.
However, once the new lines open a couple of parts of the network will be too busy for such operations, as such, this year the network is moving to line of sight operations across the entire network, this will increase significantly the numbers of trams capable of running through the city centre.
Other more visible changes currently ongoing are the new ticket machines that will be on each station by the summer and new PIDs (Passenger Information Displays) on all stations (I think), much improved on the existing ones, by the end of 2010.
Media:City and Central Park will open by end of 2011, for further dates see
www.metrolink.co.uk
really is a very exciting time for Metrolink.