Joann Moschella has been biking the steep streets of San Francisco since the late 1980s.
“The insanity of the hills, not to mention the relentless westerly winds that bring the fog, are not the real danger, though they are a challenge,” Moschella said. “Everyone who rides a bike in a big city knows that the real danger is other cars.”
About eight years ago, Moschella was reminded of this risk. She was biking the mile-long commute from her workplace to a station of the local subway system, known as BART. When she was a block away, a car cut into the bike lane. Moschella veered to the right…