One in 20 is too many.

Nearly 700 cyclists are killed on U.S. roads every year, and more than 540,000 are sent to the emergency room. The annual Ride of Silence was started in 2003 to honor and raise awareness for those tragically killed and injured on the road, and has grown into a worldwide event, with more than 270 confirmed rides planned to start tonight, at 7 p.m. Ride along on YouTube or grab a black armband and join a group near you.