Some TV programs conducted studies in the past about the boundary between areas that use Kanto type soup broth and those that use Kansai type soup broth at Soba and Udon noodles shops in the station precincts of the Tokaido Shinkansen and JR Tokaido Main Line and surrounding areas.
東海道新幹線、JR東海道本線の駅構内のそば・うどん屋やその周辺地域の出汁（つゆ）の関東風・関西風の境界線についての調査は、過去にいくつかのテレビ番組で行われている。