The Department shall allow any local school board to install signs or other devices to indicate school bus stops, provided the installation is approved by the Department prior to installation. No local school board shall be required to install signs at all school bus stops. Maintenance, repair, and replacement of school bus stop signs shall be the responsibility of the local school board. The Department, in conformance with the Department’s current policies for emergency snow removal operations, shall use its best efforts to ensure that signed school bus stop areas shall not be obstructed by snow removal operations. Installation of school bus stop signs shall not designate the area as school property.