Integrated train system around Tokyo

Today, I'll explain about integrated train system around Tokyo.

Now, I live in Yokohama city which is near by Tokyo and one of the biggest cities in Japan. Taking a trains is the best choice to go somewhere around Tokyo because there are many trains and these trains always keep accurate time table.

As a convenient tool used in cell phones, we often use train transfer applications which help us to find a optimal way to change trains in order to get to a destination both early and cheaply. It's very popular app and every body use it to go to unfamiliar stations for the first time or to search the time of last train after drinking.

By the way, trains around Tokyo have woman-only cars at early morning and late-evening to prevent groping. It's really sad to say that there are some groping incidents in Japan and that's why special cars were set recently.

I think Japanese groping problem has many aspects and it's interesting to consider in a sense.

I would like to utter about this aspects and show a jural problem related with groping on the other day.

thanks