Note that not all clipless pedals are the same. SPD's are much more fall prone than Look Keo's. I have been riding both and the difference is like night and day. When you ride with the Keo's you can just unclip with a counter clockwise (I always put my right foot down) motion of your ankle which is the reflex move with platform pedals. I have never failed to unclip with my Keo's even on emergency stops it just unclips.

One other thing you should consider is looking out for objects to hold on to a few seconds before you stop. Look for light posts or traffic signs, fire hydrants, shoulders of attractive ladies, roofs of cars that are not that expensive which have drivers with friendly looking faces inside. The list goes by.

When approaching an intersection or traffic lights, wait (don't stop) at the tail of the second car in the line and proceed very slowly. This way you will be able to waste 10-15 seconds before the light turns green or the road clears up. Remember to chose the right gear and you'll be able to drop any car without problems.