Bicycle Bike Racks

I seem to be on an alternative transportation kick! It's just such a big part of Portland, a city that tries hard to be green...
Throughout the city there are bike racks, some reflect the neighboring business or area (the Fremont bridge, for example). I'll post pictures of these later. I assume these yellow bikes are a tribute to Portland's Yellow Bike Project from the early '90s--a hopeful plan, if ever there was one. The idea was to flood the city with one-gear bright yellow bikes. When you came across one, you could ride it to wherever you needed to go, and then leave it for the next lucky person. Unfortunately, the bikes did disappear. But Portland remains a city full of cyclists.