JR-East
JR-East is the largest train company in Japan. It operates the busiest lines in Tokyo including Yamanote and Chuo line, as well as 4 Shinkansen Lines. JR-East actively inovates new technologies, such as new ATC (signaling and automatic braking system), hybrid DMU and high-speed trains. Series 209 and E231, aimed at low cost, has influenced stocks in many privete companies.