Q: What is the minimum interval between shinkansen trains?
A: On the Sanyo Shinkansen, trains running at 300km/h require a minimum interval of 3 minutes 45 seconds between the train in front. On the Tokaido Shinkansen, where the maximum speed is 270km/h, this is 3 minutes 30 seconds.
Q: What is the minimum unit of time used in official working timetables?
A: 15 seconds.
Q: What is the official definition of "lateness" used on shinkansen trains?
A: A train is officially recorded as "late" if it does not arrive at the specified time. The average lateness per train on the Tokaido Shinkansen in 1999 was 24 seconds.