As it turns out, infrastructure really matters. Your chance of injury drops by about 50 percent, relative to that major city street, when riding on a similar road with a bike lane and no parked cars. The same improvement occurs on bike paths and local streets with designated bike routes. And protected bike lanes – with actual barriers separating cyclists from traffic – really make a difference. The risk of injury drops for riders there by 90 percent. — m.theatlanticcities.com

Could the entire mood of a neighborhood depend on something as simple as street width? That was the question David Yoon, a writer, designer, photographer, and self-confessed urban planning geek living in Los Angeles, asked himself after returning from a trip to Paris. He started documenting existing streets of Los Angeles and narrowing them to see the effects that his manipulations had on the city. — mascontext.com