In the span of about 7 years, app-based ride-hailing (i.e. Lyft and Uber) has gone from non-existent to ubiquitous in major metro areas. But how are these services affecting important aspects of our transportation system like congestion, public transit, and vehicle emissions? The San Francisco County Transportation Authority (SFCTA) made a big first step last week towards answering these questions. The agency released data showing when, where, and how many rides start and end within San Francisco. These statistics are important because passenger vehicles are the largest source of climate emissions in California, a major source of air pollution, and play a central role in our transportation system, which greatly affects social equity. Read more >