Japanese train drivers are trained to the extreme, with periodic auditing by the trainers that involves being timed with a stopwatch as they cover the speedometer. https://youtu.be/xzkU6tmdImY?t=205

The high punctuality isn't necessarily without its faults; it creates a high-stress environment to adhere to schedule. 106 people died in a train crash that is hypothesized to have happened because the train was 60 seconds late. https://en.wikipedia.org/wiki/Amagasaki_derailment