And as the number of bikers is increasing, tension between drivers, pedestrians and bikers seems to be on the rise, so the first thing I would recommend is that we all chill down a little and become more considerate of all our fellow commuters, no matter how they commute.
And especially for those who drive cars (aka, metal death machines), please be aware that, as human beings, you have physical and cognitive blind spots, and that no matter how good a driver you are, any sudden maneuver may result in a collision that may seriously hurt (or possibly even kill) those of us who are trying to reduce our CO2 footprint by riding bikes.
Don't believe that you might miss something that's right in front of your eyes? Well, you could always check out the invisible gorilla test to see how fallible human attention is, or you could try to solve the crime below, and see how your own observational skills stack up:
Did you pass with flying colors? I didn't think so. So, please, drive with caution, respect traffic rules, be courteous and remember that getting to your destination a minute later is totally worth not living with the guilt of having killed someone because you got impatient and rushed into a thoughtless decision.
In other words, I'm concerned for my life. Don't run me over!!! :)