Addressing climate change will require difficult choices both individually and collectively. But there are good choices, too, and transit is one that can make the most significant dent in greenhouse gas emissions….On any given weekday in San Francisco, Muni carries 26 percent of all daily trips, yet generates less than 1 percent of the city’s greenhouse gas emissions. That is a great deal for the environment.

By Ed Reiskin (Muni’s Director of Transportation), SF Chronicle, July 30, 2018