State laws delegate limited control over building, alcohol, marijuana, gambling, and taxi licenses to municipal governments. Municipal governments own most roads, and many use police and traffic control officers to enforce their own parking regulations, and set speed limits and various restrictions on local roads within state parameters. Maintenance of state-owned roads (typically major), setting the rules of the road, driver and vehicle licenses, and public transportation are MassDOT responsibilities, though regional transportation agencies such as the MBTA are funded partly by fees paid by municipalities.