Edited by Michiel Bliemer, Corinne Mulley and Claudine J. Moutou
Chapter 19: Network design for road transit priority
Traffic congestion is emerging as a major constraint to the achievement of national economic potential in cities around the world. National research has shown that the total amount of travel undertaken by residents of Australian cities has grown tenfold in the past 60 years, and the cost to the economy of traffic congestion totalled $9.4 billion in 2005. These costs are among the highest in the world when compared with Australia’s gross domestic product. As urban populations continue to grow, traffic congestion is expected to increase in developed and developing countries. This means that transportation networks and transit networks need to be (re)designed to accommodate increasing travel demand. Policy makers will have to make decisions regarding investments. For example, where should additional road infrastructure be built, or which roads should be expanded with an additional lane? Such a problem can be referred to as a road network design problem. In case of transit services, where should new train or bus lines be introduced, or what frequency should each line have? This is called a transit network design problem.
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