Why Countdown Clocks for Pedestrians Actually Cause More Car Crashes

As a frequent traveler by foot, I love countdowns at crosswalks. They tell me whether I should wait out 2 seconds or leisurely walk across in 15. And indeed, these countdowns do make pedestrians safer. But it turns out that countdowns actually cause more crashes between cars. Here's why. » 7/01/14 4:34pm 7/01/14 4:34pm