Edited by Michiel Bliemer, Corinne Mulley and Claudine J. Moutou
Chapter 23: Traffic and mobility management
Governments worldwide can follow several strategies to alleviate travel delays and combat emissions arising from their increasingly congested city roads. Options are to simply build more infrastructure (new roads or expansion of existing roads) or establish new public transport services. This is a long-term strategy which requires significant planning and assessment of alternatives. It is often not financially feasible or environmentally desirable to increase the road capacity at the same rate as the growth of demand for passenger (and freight) transport. Another option is to better manage the existing road infrastructure supply and travel demand. Managing road infrastructure is often referred to as traffic management, which aims to utilize existing roads more efficiently given a certain travel demand (that is, vehicles on the road). It aims to improve the efficiency of the roads through the application of smart infrastructure technologies and information. Traffic management measures are often part of what is referred to as intelligent transportation systems (ITS). In Australia, under the name of smart motorways, also referred to as managed motorways, a wide range of traffic management measures are combined.
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