thumb|A DMU tilting train express Super Ōzora in Japan Japan has six main regional passenger railway companies, known collectively as Japan Railways Group or simply as JR. Five JR companies operate the "bullet trains" on very fast and frequent Shinkansen lines that link all the larger cities, including Tokyo, Yokohama, Nagoya, Kyoto, Osaka, Hiroshima, Fukuoka and many more.
thumb|A DMU tilting train express Super Ōzora in Japan Japan has six main regional passenger railway companies, known collectively as Japan Railways Group or simply as JR. Five JR companies operate the "bullet trains" on very fast and frequent Shinkansen lines that link all the larger cities, including Tokyo, Yokohama, Nagoya, Kyoto, Osaka, Hiroshima Fukuoka and many more.