I don't know if this happens in other places but in my town there is this wave when a car is given the right of way when they are either not supposed to or they are stuck and will sit there forever until someone lets them go. This happens most often when it is "rush hour". Yes. we do have a rush hour in this little place of mine. But I love this little wave when it is directly towards me because I know I have helped someone out and it matters to them. And I love this little wave when I get to use it because I know it is a "I'm sorry and thank you!" wave. So next time wave, it makes people feel good.