Originally published between 1935 and 1985, the 20 volumes in this set: Discuss reducing the need to travel, city centre options and population densities Analyse global transport planning investment and economic development Examine sustainable urban development and transport Scrutinise the means by which the carbon and energy costs of transport can be quantified and used in evaluation Study energy consumption patterns of different settlement types and their associated travel demand patterns. Measure the non-transport benefits of transport investments, with particular reference to disadvantaged sectors of society.