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to be developing a network that covers more areas and enables last mile connectivity and feeder services to be more effective. 
Also called reversible lanes. A reversible lane (called a counterflow lane or contraflow lane in transport engineering nomenclature) is a lane in which traffic may travel in either direction, depending on certain conditions.
Its out now... ABIDe plans on their site 
A tram-train is a light-rail public transport system where trams also run on main-line train tracks for greater flexibility and convenience. Most tram-trains are standard gauge, which facilitates sharing track with standard gauge mainline trains. Tram-trains have dual equipment to suit the respective needs of tram and train, such as support for multiple voltages and safety equipment such as train stops.
