A new fee system is
being considered for development that would reward developers that build near transit. Previously, it depended on level of service at traffic lights. But that doesn't cover negative externalities:
San Francisco officials want to change the formula, basing impacts on the number of new automobile trips generated — something routinely calculated by developers. The result, proponents say, could encourage building in transit-heavy, walkable areas.
City officials began looking into changing the formula several years ago after determining that time spent at stoplights didn’t take into account carbon emissions, pedestrian safety and noise, said Rachel Hiatt, transportation authority senior planner.
As they say in the article, I believe it will change the way development happens in the city but I wonder if it will increase the resistance to transit projects because they might bring more developers.