SAVANNAH, Ga. — A proposal to put double-decker tour buses on the streets of Savannah’s historic district has residents rallying to bring the plans to a screeching halt, with critics fearing the buses would hit ancient oak limbs and give sightseers a peeping Tom’s view into homes.

Two Boston businessmen are lobbying Savannah City Hall to end a 17-year prohibition on double-decker buses in the coastal city’s historic district, which draws 12 million visitors a year. Savannah’s Downtown Neighborhood Association is urging officials to deny the request.