A TIME-SERIES ANALYSIS OF ENVIRONMENTAL IMPACT OF TRANSPORT IN SURROUNDING AREAS OF STATIONS FOCUSING ON PRIVATE VEHICLES DEPENDENCE AT THE TIMING OF URBAN RAILWAY DEVELOPMENT

Abstract

This research aimed to verify the relationship between private vehicles dependence during the development periods of urban railways and the time-series change in environmental impacts of transport; targeting the surrounding areas of new urban railway stations in metropolitan regions of Japan.
The analysis statistically showed that the environmental impact of transport would tend to decrease in areas with lower modal shares of private cars at the timing of urban railway development. On the other hand, it also suggested the rapidly increasing tendency of environmental impact in areas with larger vehicle use at the timing. However, it also revealed that new stations with high frequency departures would contribute to decreasing the environmental impact of transport in highly urbanized areas, even if they are considered auto-dependent.