Looks like some tickets are in order.
Even with planted protective barriers alongside the Oak Street bike lane, some drivers haven't got the message and continue to park or stop in it. It's not clear if the violations are happening less often, and it's still early in the learning curve, but the hope had been that the planters would send a stronger message to drivers to stay out.
The design leaves large gaps in the physical protection around curb cuts and the approaches to intersections, where turning drivers merge into the bike lane. There are no plans to expand the protective islands.
For now, San Franciscans have to rely on the SFMTA and SFPD to provide consistent enforcement against violators. That's another work in progress.
