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20 Mar 2013: High-Speed Trains Provide
Environmental, Social Benefits, Study Says

Bullet trains fuel real-estate booms, improve quality of life, reduce air pollution and traffic congestion, and provide a “safety valve” for crowded cities, especially in the developing world, according to a study by Chinese and U.S. economists. The study was based on China’s rapidly expanding high-speed rail network, but the researchers said the benefits experienced there would be similar for California’s proposed high-speed rail system. Bullet train systems connecting China’s largest cities to nearby smaller cities have made these “second tier” cities more attractive for workers and alleviated traffic congestion and pollution in megacities, according to the study, carried out by economists at Tsinghua University and the University of California, Los Angeles (UCLA). The study found that the trains created a new category of exurbs within 60 to 470 miles of urban centers such as Beijing, Shanghai, and Guangzhou, helping keep people from moving to already crowded megacities. “The bullet trains could act as a safety valve by encouraging people to move to second-tier cities, improving the quality of life in both areas and creating more sustainable growth,” said Matthew Kahn, a professor at UCLA and co-author of the study published in the online version of the Proceedings of the National Academy of Sciences. UCLA researchers suggest a California high-speed rail system from San Diego to San Francisco and Sacramento could likewise alleviate the problems associated with rapid growth in the state’s biggest metropolitan areas.


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