The boxes allow bike riders to get up front at a stop light, increasing visibility to motorists and allowing them to cross safely. The ones going in on Market Street are the first in San Francisco to be made of a rough, grip-sensitive material that should help bike riders keep traction even in the rain.
The bike boxes come as welcome news to bicycle advocates who have been pushing the city to complete a continuous Market Street separated bikeway.
Crew members said they'll be installing the next boxes at Van Ness Avenue tomorrow. See more photos after the jump.
Aaron was the editor of Streetsblog San Francisco from January 2012 until October 2015. He joined Streetsblog in 2010 after studying rhetoric and political communication at SF State University and spending a semester in Denmark.
But many advocates are already concerned it could provide funding for more highways. And will it really provide the seamless and equitable transit system everyone says they want?