The Division of Transportation is a part of the Department of Public Service, which is governed by the City of Toledo in Ohio. The division works to provide safe and secure environment for residents. It is responsible for traffic signal design, installation and maintenance. The Division of Transportation administers traffic counting and residential disabled parking programs. The division offers pavement marking and lane closure solutions. It conducts studies to review the requirement for speed humps. The Department of Public Service also operates the Division of Solid Waste and the Division of Parks and Forestry. The department s Division of Streets, Bridges and Harbor is responsible for the repair and maintenance of the city s streets, alleys and bridges.