There are several routes available to and from work on my daily ride, and it has come to my attention that more and more (not like dandelions in Spring) Share The Road signs are going up, appropriately in areas where there is a wider lane, but no designated bike lane.
I do not believe this changes the behavior of most motorists, it merely gives us something to point to in case we are involved in a collision with a car. Ride like you belong on the road, and use care when taking more of the lane than you should (potholes, roadkill, hazards of any sort). Blinkies on your backpack or messenger bag also help.
Does anyone anywhere else see positive improvements to their commuting/riding experience?