Google maps and other navigational apps could potentially flood residential routes that weren't supposed to handle traffic. People have done different measures to combat this. One anecdote is: "And in 2016, in Takoma Park, Maryland, residents went to great lengths to prevent Waze drivers from flooding their roads during a bridge reconstruction project. A Takoma Park man reportedly started reporting phantom wrecks and traffic jams on his street before Waze banned him" ref: https://www.usnews.com/news/national-news/articles/2018-05-0...