“…Current research on traffic accessibility has focused on its assessment, accessible spatial patterns and their evolution, the influence of accessibility on the development of the regional economy. Research has also focused on high-speed road networks (Dupuy and Stransky, 1996;Li and Shum, 2001), city ring roads (Linneker and Spence, 1996), railway networks (Murayama, 1994;Jin and Wang, 2004;Wei and Cong, 2004), aviation infrastructure (Bowen, 2000), and city or regional road networks (Cao and Yan, 2003;Zhang and Lu, 2006;Lie andShao, 2008, Jin et al, 2009). The city discussed in the present study, Beijing, has a high-speed road network, city ring roads, subway and aviation networks, and both city and regional road networks.…”