Transportation in cities, with its related environmental and social concerns, continues to be a topic of the utmost priority for urban authorities and central governments around the world. This is reflected in the proceedings of the Twelfth International Conference on Urban Transport and the Environment in the 21st Century , stressing the continuous steady growth and research into the urban transport systems control aspects, information and simulation systems.

The papers included in the volume cover a wide variety of topics, such as: Transport sustainability; Urban transport planning and management; Transport modelling and simulation; Transport logistics and operations research; Transport security and safety; Transport technology; Land use and transport integration; Environmental and ecological considerations; Intelligent transport systems; Public transport systems; Information systems and GPS applications and Road pricing.