were all it took to inspire me to write this.  
 Number one   
      Driving down the highway and trying to merge  to the next lane. I either didn't see the small truck next to me and slightly  behind, or he was merging into the lane I was, at the same time.  In either  case, I moved back to my lane and he began to pass me from the lane we both  tried to merge from.  I acknowledged our close call with a simple wave and he  acknowledged with the same in return.  In many cases,  such a confrontation  would lead to my acknowledging with a wave,  the other driver could acknowledge  with a one finger wave and some choice language.
 Number Two
    I was merging from a ramp onto the highway in  heavy traffic. It's the type of merge when you need to begin getting to the far  two lanes, because of another freeway exiting, closely ahead.  Since I am  pulling my 14ft trailer, I begin using my blinker while coming down  the ramp. Under  "what seems to be normal  circumstances" I would have to keep trying to merge  while rude people get closer together, so as not to let anyone squeeze in.  A  lady in a SUV backed off slightly to allow me to merge in front of her.  I  rolled down my window and gave her a courtesy wave. She waved back.  
 Number Three      
    I wanted to make a right turn ahead, at the next  street,  after just leaving my house. The driver in front of me stopped  abruptly, before I could see there was a  elderly lady crossing the street,  where we both wanted to turn. We both waited until she got to the curb, then  began to move forward. The lady gave a little nod and smile, as if to say thank  you for being patient.  That was the very moment I realized  how those "three  bits of courtesy",  affected me in a way to make me remember, kindness, could be  contagious, one bit at a time.