The data has been trickling in for years in Powerpoint slides and stray tweets: on one street after another, even in the bike-skeptical United States, adding a physical barrier between bikes and cars leads to a spike in bike traffic.
Now, the first multi-city academic study of U.S. protected bike lanes has dropped, and a series of anecdotes have formed a very clear trend line: when protected bike lanes are added to a street, bike traffic rises — by an average of 75 percent in their first year alone, for the eight projects studied.
The bike spike showed up at every single facility measured, even those that previously had conventional painted bike lanes.
Read More (and see way more charts and graphics!): The protected bike lane ridership bump, city by city (infographic) | PeopleForBikes.