You know when you’re in traffic and it’s really busy and you need to move over a lane and you aren’t sure how you are going to get into the lane? And then some kind soul waves you over and you slide in where you need to be and life just gets easier? You give a wave under the rear view to say thank you and carry on with your day. Having someone usher you into traffic makes a stressful situation easier. It’s not something they have to do, it’s just a nice thing to do to help your fellow victim of traffic. It’s a lot like the mom nod.