Absolutely. You guys really have no conception of just how many people they have to cram through there at peak times. Like someone said earlier, the trains come every 3–4 minutes. It’s not physically possible to have them come more frequently. It’s not physically possible in many places to build more train lines. Urban Tokyo has nearly 4 times the population of urban New York, and that doesn’t count the millions of people who commute up to two hours from the surrounding countryside. Seriously, funnel something like 15–20 million people through anywhere in the space of 2–3 hours and there is absolutely no way to avoid crowding.
Read the stats on Shinjuku and see how much of a logistical miracle it is to have those trains not only running, but damn near always on time. Close to 3.5 million people a day pass through that single station. The only times the trains are late or delayed are due to suicides on the tracks or something that routine maintenance can’t prevent, like gale-force winds or flooding. I may criticize Japan in a lot of other areas, but the train system runs about as well as humanly possible.
To give you a very small idea of how crowded it is all the time, I went to visit my family in the San Francisco area just before Christmas. My aunt had to do some last-minute shopping, so I went with her to the mall. As I looked around, I asked her, “Do you think the mall is crowded today?” She said, “Very.” To me, it looked like a half-deserted shopping area; like the middle of the day on a weekday when virtually everyone is at work or school but housewives, young adults between high school graduation and college, and the unemployed.
At the time, I lived an hour and a half away by shinkansen from the Tokyo area. It was the Japanese equivalent of what Americans would call, “the middle of buttfuck nowhere” out in the countryside. It’s still more crowded there than most urban areas in the US.
Japanese people tend to do things at the same time as everyone else, not just work commutes. On holidays and other busy times, the highways and regular roads are so congested that you could almost literally walk faster. In the summer, a bunch of people go to the countryside for hiking, onsen, sightseeing, etc. The busiest time is the last week or so before September. The crowds returning home were so bad that I remember seeing a report on the news about a 40 km long traffic jam that lasted several hours.
Wherever they can improve infrastructure, they’re doing it. Believe me, Japan loves to build stuff. The Ministry of Land, Infrastructure and Transport’s motto could be, “Pave our planet.” It doesn’t matter how much they build, how efficiently they run it, how well it’s planned, there will be bottlenecks and there will be far too many people trying to use the roads and trains during peak times.
Roughly 1/3 the entire population of Japan lives in the Kantô area. Try to imagine cramming 40 million people into an area the size of Montana. Then try to imagine that the majority of the people live in half that land area, because Ibaraki, Tochigi, and Gunma are sparsely populated compared to the Tokyo-Saitama-Chiba sprawl. Heck, even the inland half of Saitama is relative countryside, so something like 60% of the population there lives on the Tokyo end of the prefecture. There are cities in the world with higher population densities, but most of those cities have far fewer total people than the Tokyo Metro area. You really do have to experience it to believe it.