I'm sure the cameras have been a good thing in a couple of instances. That being said, I don't like the way they are using them to "coach" the drivers. They act like the world is going to come to an end because a driver is 3 seconds behind a car instead of 4. I have been operating a CMV for 35 years and have never been involved in a CMV accident. Then they have a "coach", and I use that term loosely, that has had a CDL for less than 3 years and has rolled a set during that time, try to lecture me? Hell I've driven more miles in reverse than that snot nosed, Gluteus Maximus kissing punk has driven forward. Soon they will be writing people up for these indiscretions, then running the drivers off when they receive so many LOI's for their driving "habits". 12 seconds of video and they think this is the way you drive for 10 hours a day. The damn camera never catches the good stuff. just like our personnel files, only bad stuff gets saved, not the good.