2007 Volume 24 Pages 587-592
Disorderly sprawled land use in developed countries was aggravated by the progress of motorization. City planners in developing countries can avoid similar mistakes to be repeated. In view of the fact that personal income level and car usage have a positive relationship, the objective of this research was to elucidate the influence of rising income level on car use. First, it was found that the share of automobile mode will rise with increasing income levels for cities with income levels above a certain value. Next, it was found that average trip length for high income level groups tends to be longer and this could be attributed to the increase in car usage. In addition, in Chengdu, one of the reasons why trip length of high income level groups has risen has been hypothesized to be that people from high income level groups are moving to the city's peripherals and this has been quantitatively proven.