Handicap area / Öffentliche Plätze

We usually see a physically challenged person.
They need enough space at the public place.
For example, When they take a elevator or a subway and When they are waiting at a bus stop and the train station.
There are not space only for them.
so, I proposal Handicap area which is used sticker to offer space for them.
Handicap area is put on a floor and the ground. and then they can get more advantage. and Other people can make concession for them.