Reasons and countermeasures of traffic congestion under urban land redevelopment

Urban land redevelopment which is a reconstruction on a previously developed area with existing transportation facilities is an important component of city evolution. While improving land use efficiency, it can bring negative impact to transportation system, such as causing traffic congestion. Especially in China, there are many examples about redevelopment projects causing traffic congestion. For a better guidance of land redevelopment of China, it is necessary to find the reason caused traffic congestion after urban land redevelopment and provide some corresponding countermeasures. The objective of this study is not only to attract attention to the transportation during urban land redevelopment planning and management, but also to provide a way to reduce traffic congestion. In this paper, we first analyzed why traffic congestion happened after urban land redevelopment through some classical examples. We didn't stop at the apparent reason, but do deep analysis. As a result, we uncovered the traffic congestion after redevelopment is due to inappropriate land use and transportation facilities under redevelopment, but the real cause is originated from urban and transportation planning and management. Consequently, we offered some corresponding countermeasures from three aspects: (1) before development, ingrate urban land and transportation and do a rational planning to avoid inappropriate redevelopment planning; (2) during development, improve and strengthen management and control to ensure that the redevelopment project are proper; (3) after redevelopment, implement traffic congestion management of both traffic supply and demand to relief traffic congestion. (C) 2013 The Authors. Published by Elsevier Ltd.