my name is mark gruber. i'm a board member of the san francisco taxi workers alliance which has not yet come to discuss this measure, so i'm speaking of my own impressions, speaking for myself. while the details of this measure need to be worked out, and i have a number of questions, and i'm sure the board will have a number of questions, i do want to express personal support for the concept of checks and balances in this legislation. if the board of supervisors had retained regulatory authority over taxis back in 2009, the disaster that is the medallion sales program might never have happened. the board ceded its authority over taxis to the mta based on false assurances from mayor newsom. supervisor peskin knows this story very well. within three months of the mta's take over of taxi regulation, the mayor went back on its word. this has ruined dozens of drivers lives. dozens have defaulted on their loans and many more are in prospect. likewise, if the board had kept ultimate authority over transportation, t