I have lived in Japan. I can say for sure that (a) the video is real, and (b) it happens everyday during peak hours. And mind you, Japan has arguably one of the best public transportation system in the world.
The problem with "planning parameters" is that you use it for the average case and often the peaking is not factored in too much because if you plan for the peak, you will have excess capacity during the non-peak (bad for bean counters). So will we get to be like this even after all the planned train lines are up?
Trains in Japan during peak hour - YouTube
The problem with "planning parameters" is that you use it for the average case and often the peaking is not factored in too much because if you plan for the peak, you will have excess capacity during the non-peak (bad for bean counters). So will we get to be like this even after all the planned train lines are up?
Trains in Japan during peak hour - YouTube