Where is San Francisco's transportation system headed?

A new report from the Dutch mapping company TomTom ranks San Francisco the second most congested city in the country; only Los Angeles is worse. And in times of gridlock, people often choose to take public transit, bike, or even walk in order to avoid driving. It’s the job of the San Francisco Municipal Transportation Agency (SFMTA) to make those alternatives as appealing as possible. Tom Nolan is chairman of the SFMTA. Nolan has served on transportation boards throughout the Bay Area, including SamTrans and Caltrain. Now, as Muni's chair, he’s presiding over the board at a time of rapid change. Tom Nolan sat down with KALW’s Raja Shah to talk about the current state of public transit in San Francisco and where it might be heading.