In the video, several runners are running towards the camera in the dark. At first you only see three runners, but there are actually seven. Four of them are wearing white t-shirts and you can't see them until they are 250 feet away. That's too close for comfort if there are vehicles around.
The video is from 2011. While its message is just as critical today as it was in 2011, reflectivity gear has come a long way in the last five years.
