Many of us have done it -- checked our phones to read a new text or send a quick tweet as we stroll down the street. It only takes a few seconds, right?  And while we know we should watch where we’re going, we think, worst case is that we’ll bump into the person in front of us, or trip on the sidewalk.

Experts are blaming texting and walking on the rising number of pedestrian injuries and deaths among teens. Walking safely, they say, requires the focused attention of both pedestrians and drivers.