This might be sudden, but what is the longest passenger train in Japan? The answer is the super-express train on the Tokaido and Sanyo Shinkansens. It consists of 16 units of 25-meter-long cars, so that it attains a total length of 400 meters. Was it a piece of cake for you? Now, we go to the next question. What's the longest commuter train in Japan? The answer is the JR East commuter train operated on several commuter lines. For example, the E233-3000 series on the Tokaido main line is composed of 15 units of 20-meter-long cars, so that it attains a total length of 300 meters. Was it also easy? Well then, here is a formidable question. What's the train with the maximum number of passenger doors in Japan?
Please look at the photos. It's the EMU JR East E231 series on the Joban line. It's composed of 15 cars. Each car has four passenger doors on one side; therefore, one train has 60 passenger doors on one side. This is the train with the maximum number of passenger doors in Japan. A conductor, who works on board this train, has to close the passenger doors after confirming the safety of all 60 doors all at once. It's a tough job, isn't it?
For your information, there are some other 15-car-commuter-trains in Japan such as the above mentioned E233-3000 series on the Tokaido main line; however, they have Green Cars (the 1st-class car), which has only two passenger doors each on one side.
