Casual Carpool is great. But there is insufficient space, both in width and in number of spaces, for the demand. Drivers must park in the bike lane, and passengers do not look for cyclists before throwing open their doors into oncoming cyclist traffic. A short bike channel, located between the parking space and the sidewalk, would resolve these conflicts. The city already installs this infrastructure for bus islands with bus channels - examples are at North Point/Polk and Potrero/16th.