Day 22: Can I walk here?

It was quite late and I was walking to my rental flat after visiting my goddaughter. I was tired and my head was full of stupid thoughts. And then suddenly I got this really foolish question to my head: can I walk here without anyone holding my hand?

Why sidewalks are marked with "parent and child walking and holding hand"? Should there be separate sidewalks for people walking alone? Or should I wait until someone comes and is willing to walk with me holding my hand? So stupid idea that I had to take picture of the sign...