Sure itself regulates, because people have a survival instinct. I can tell you from experience however, after the massive wind storm of 2011 in LA, when every s

Sure itself regulates, because people have a survival instinct. I can tell you from experience however, after the massive wind storm of 2011 in LA, when every signal was dark, it turned my 11 mile commute from downtown into a 90-minute affair, with an exhausting cognitive load because of the constant concentration required. The commute ranges from 20-40 minutes (typically 30-35 at rush hour) when the signals are on.