“…Improving transport safety Traffic safety, whose impacts have increasingly been concerned by people, exerts impacts on physical activity level (Gómez et al, 2010;Hoehner et al, 2005;Owen et al, 2004;Shigematsu et al, 2009). The density of road and transit stop, and mixed land uses increased the probability of occurrence of traffic accidents (Yu, 2014). On the other hand, improving road traffic conditions could reduce the chances of slowly moving older people in suffering from collisions that involve motor vehicles (Yee, Cameron, & Bailey, 2006), and thus significantly increased their physical activity levels (Strawbridge, 2002).…”