@scott for the first 4 weeks I was still using the car lanes, but had several drivers angrily pass me. This was before the little bumps were added, so I would be riding in the middle of the road (as SFMTA suggests) and cars would swerve into the bike lane to pass me. Of course, I'm going the same speed as the timed lights, so the car would do that for no good reason, but drivers were acting really erratic. So I switched to the unfinished bike lanes after a few close calls.