The Electrified Double Track Project (EDTP) spanned 329km in the northern district of Malaysia and involved the retro-fitting of a century-old rail network with state-of-the-art electrification and signalling systems. Once a single track, nine-hour journey between Ipoh, Perak and Padang Besar, Perlis, the same interstate train journey now takes only three hours. Aside from upgrading of the original single track to two parallel rail tracks, the EDTP project scope included the construction of new stations, various bridges, tunnels, land and marine viaducts, control centres and a depot.