The fundamental law of highway congestion revisited: Evidence from national expressways in Japan☆
We have benefited from helpful comments from Jiahua Che, Gilles Duranton, Charles Y. Horioka, Tom Holmes, Nayoung Lee, Wallace Mok, Sung Yong Park, Liugang Sheng, Matt Turner, two anonymous referees, the Co-Editor, and seminar participants at Tsinghua University, the 2010 HKEA Sixth Biennial Conference, and the 2011 Annual Meeting of the Urban Economics Association. We would like to thank Kin Tai Cheung, Vincent Chow, Chuantao Cui, and Jia-Jin Wu for their research assistance. We are also grateful to Tomoya Mori for providing us the definition of urban employment areas. All errors are ours.