TOKYO -- Central Japan Railway will run 12 of its fastest bullet trains between Tokyo and Osaka each hour during high-demand periods starting next spring, up from the usual 10, as newer, faster trains allow for a more packed schedule.
Faster rolling stock to increase Tokyo-Osaka service during peak times

JR Central will cut the travel time between Japan's two largest cities by using faster bullet trains.
TOKYO -- Central Japan Railway will run 12 of its fastest bullet trains between Tokyo and Osaka each hour during high-demand periods starting next spring, up from the usual 10, as newer, faster trains allow for a more packed schedule.