I don't konw the detail but a law about the streets in Japan seemed to be changed several months ago. For blind persons, textured paving blocks are now attached on many streets. The yelloew blocks must be helpful for the blind. However, the blocks makes another problem happen.
A textured paving block is not thin.
If you put the block on the street, the street becomes uneven and not-flat.
So, to keep the street flat, we have to dig it and put the block "under" the street.
But Japanese public service is crazy as usual.
After they put the block on the street without digging it, they poured new asphalt on the street in order to make it even.
As the result, new walking streets become higher now than before.
When you cross the street, you can find the diffrence in level, which makes the moving of old people or wheelchairs difficult.
This is the typical work by Japanese public service.
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