Abstract
Hokuriku Shinkansen was extended from Nagano to Kanazawa on Mar. 14, 2015. There are many visitors from the Tokyo area to the district and the area is crowded with visitors. The number of passengers increased to around 3 times compared with before the extension. On the other hand, the number of passengers on airplanes from Haneda (Tokyo) has been dropping sharply. There are three airports in the Hokuriku area which includes three prefectures. Those airports are Komatsu, Noto-Satoyama and Toyama Kitokito. The passengers toward Haneda from Komatsu decreased by approximately 37 % and Toyama Kitokito decreased by 54 %. However, Noto-satoyama increased by 8 %. The Shinkansen line will be extended to Tsuruga (Fukui Prefecture) via Fukui on March 2023. The number for Komatsu will decrease in addition at that time. It is necessary to verify and estimate the decreasing characteristic, and the states of the Shinkansen and the airlines should be verified as an important transportation infrastructure. As the result of this investigation, rate of airplane passengers is decreasing as the seat-load time of the Shinkansen is shorter. It is necessary to construct a countermeasure for the decreasing characteristics of the two airports, especially after the Shinkansen extension to Tsuruga.
