theodp writes "With new bike sharing programs all the rage, spending tens of millions of dollars to make city streets more bike friendly with hundreds of miles of bike lanes has become a priority for bike-loving mayors like NYC's Michael Bloomberg and Chicago's Rahm Emanuel. 'You cannot be for a startup, high-tech economy and not be pro-bike,' claimed Emanuel, who credited bike-sharing and bike lanes for attracting Google and Motorola Mobility to downtown Chicago. Now, with huge bike-sharing contracts awarded and programs underway, the NY Times asks the big question, How Safe Is Cycling? Because bike accidents rarely make front page news and are likely to be dramatically underreported, it's hard to say, concludes the NYT's Gina Kolata. UCSF trauma surgeon Dr. Rochelle Dicker, who studied hospital and police records for 2,504 bicyclists treated at San Francisco General Hospital, told Kolata,'Lots of my colleagues do not want to ride after seeing these [city biking] injuries.' On the other hand, Andy Pruitt, the founder of the Boulder Center for Sports Medicine and an avid lifelong cyclist, said the dangers were overstated, noting he's only broken his collarbone twice and hip once in four decades of long-distance cycling. So, is cycling safe, especially in the city? And is it OK to follow Mayor Emanuel's lead and lose the helmet?"