Yamanot.es: A music box of train station melodies from the JR Yamanote Line

Another one: https://yamanote.app/

Interestingly this one seems it is from before 高輪ゲートウェイ (Takanawa Gateway) station which opened in 2020, but the numbering shows the gap (JY 25 -> JY 27). That led me to looking it up, and turns out that they introduced the numbering in 2016, and that already came pre-planned with the gap ready [1].

[1] https://www.jreast.co.jp/press/2016/20160402.pdf

In the street where I grew up they had to renumber most of the houses one year because a row of new buildings were built, so everyone that was further down the street than the new houses had to have their numbers increased so that the new houses could be given numbers that were in order with where along the street they were built.

I wonder if that sort of renumbering is common or not, and if Japan is better at planning that sort of thing also.

I was too young at the time to know if this lead to any mail delivery issues, and I imagine the postal delivery service was made aware of the change. But I would think that even if they were notified it would sometimes be the case that if your house used to be say number 53 and now it’s 73 that mail that was intended for you ends up in the mail box of the house that used to be 33 and is now 53.

Even if not at first then at least like 3 years later when some random company still has your old address on file and most other mail for everyone in the street is usually addressed to updated numbers.

In Japan house numbers are based on construction date rather than position along the street.