This is a pretty interesting discussion on BikePortland.org. I'm posting it here to get away from the 'usual suspects' in A&S.
From the post:
“[Portland has] undoubtedly...come a long way in building a comprehensive bike network since 1990 (see below), but we have a long, long way to go. For example, our bikeway network includes miles of bike lanes along Highway 30 from NE 11th to NE 178th and many more miles on the west side, from Northwest Portland to Linnton and beyond.
Unfortunately, these are not useful or realistic bikeways; they are dangerous, inaccessbile, and completely marginalized…when the city was getting the bike program and master plan developed they looked to streets that could easily accommodate bike lanes without significantly impacting automobile traffic…now we need to revisit those decisions in light of what we know about what really gets people on bikes (safe bikeways).
The fact is, Portland has largely built its bicycling infrastructure on non-controversial, inexpensive projects that squeeze bike facilities into current right-of-ways without inconveniencing drivers.
Portland often looks to Amsterdam as both a goal and an example for biking…If Portland really wants to grow beyond that 5% mode share mark, we’re going to have to make tough decisions about our bicycling facilities.”