A city does
not want drunk people crashing cars into infrastructure or murdering its inhabitants. They don't want to support injured people who are unable to work. They don't want these types of cases taking up the court's time. All this stuff
costs a city money & they aren't inviting people to do it just in case they get caught (because the type of person who can't afford a cab home probably also can't afford to replace a downed traffic light).
Save the conspiracies for red light cameras or speed traps.