Air transportation is well developed and vital to Australia's sparsely populated center and west. Sydney suffers from air congestion; a third runway is being added to Kingsford Smith Airport and Sydney West airport is due to open in 1998. A high-speed train linking Sydney, Canberra and Melbourne is under discussion. Most freight in Australia travels in massive trucks known as "road trains." Improvements in urban transportation are a priority, particularly in Sydney, in the build-up to the 2000 Olympic Games.
