A fresh wave of consternation has swept through San Francisco’s RV community as a controversial proposal seeks to outlaw overnight parking on city streets. The move, targeting a fast-growing segment of the homeless population that calls their vehicles home, has sparked an outcry from advocates. The San Francisco Municipal Transportation Agency (SFMTA) laid out the groundwork for this change, which would restrict large vehicles-specifically travel trailers and mobile homes-from parking on any city-managed street between midnight and 6 a.m.