Abstract
One of the principal triggers of industrial agglomeration is the reduction of costs for business trips; business trip data-based analysis seems to furnish a lot of insights about industrial agglomeration. Fortunately, business trip data is provided every 10 years in Tokyo metropolitan area, though, to the best of the authors' knowledge, no studies have discussed spatial industrial agglomeration using its small zone-level detailed business trip data. This study analyzes spatial industrial agglomeration in the 23 wards of Tokyo utilizing the small zone-level data. Specifically, we first show that the spatial scan statistics, a test statistics of spatial agglomeration, is readily applicable to the business trip data, and, then, spatial industrial agglomerations of the business trips in each industry classification are analyzed by applying the statistics. Besides, we analyze the difference between the agglomerations of the business trips and those of the number of employees too.
