Openings can include grates or grilles for landscape or drainage. Small holes can catch canes and wheels and should be avoided. Large unmarked openings such as for tree pits or where construction is not completed will not be allowed in or adjacent to accessible paths. Following should not be located in accessible paths:o Drainage inlets o Catch basins o Tree grates Where these are already located in accessible path, they should be either relocated or a new accessible path found