LOCAL AIR QUALITY Electrically powered rail transport is the least polluting form of mass transport mainly because air borne emissions arising from a small number of power stations can be more easily controlled than those from mobile internal combustion engines. In addition, power plant emissions are generally more widely dispersed and occur further away from densely populated areas. Figures below provide a graphical comparison of the emissions from the different types of transport available in Hong Kong (W. Barron & Steinbrecker 1997). * With the exception of taxi data, information extracted from W. Barron & Steinbrecker 1997 * With the exception of taxi data, information extracted from W. Barron & Steinbrecker 1997	Environment Introduction Environmental Management Environmental Performance Progress Against 2002 Targets Environment Targets for 2003 Green House Gas Emissions Waste Noise Local Air Quality Water Consumption Indoor Air Quality Dust Ozone Depleting Substances Discharges to Water Environment Targets 2002 : Summary of Incomplete Targets