One of the things I like most about bicycling in Portland are all of the wonderful signs they give you.
They tell you where to go and about how long it will take to do so. I have always found the timing estimates to be spot on. It is quite hard to get lost even though just about everything is a clapboard house with a big tree in front of it.
The ones in San Francisco are a little more interpretive. We have room for improvement.