Specify road smoothness

update: minor: POI data

upd: traffic sign

add: traffic sign

update: add: playgound/trashbin/bench

update: minor

add: poi

update: amenity closed

update: minor

update: parking

update: path

update: path

update: path

update: path

update: POI data

update: minor

update: minor

update: minor

update: path

update: path: smoothness