Other researchers have found that the heavier the traffic in an area, the less people think of it as home territory. People feel that streets with heavy traffic are less personal than streets without, and so are the houses on such streets. American statistics suggest that a neighbourhood begins to deteriorate once it has a road with more than 200 cars per hour. On streets with 550 cars an hour, people visit their neighbours less and never gather in the street to meet and talk. Research in London also indicates that any street with more than 200 cars per hour, at any time, will probably seem 'major' and start to destroy the neighbourhood identity.