He isn't a Police Officer, he is a speed camera operator.
I feel sorry for him being caught like that. I hope he doesn't get sacked over as he seems like a nice guy just doing his job who nodded off for a few minutes. Sure I dislike speed cameras like the most of us but here is someone earning a living being set up by some person wanting 15 minutes of fame, who thinks he is funny and clever catching someone napping on the job.
You can't tell me those of you who sit down at work, or have sat in a meeting, have never dozed off. I have. I have a staff member who has sleep Apnoea and throughout the day his eyes will close while he is at his desk for a couple of minutes. I let him go as it refreshes him and his falling asleep isn't going to hurt any one. This guy's job is to sit in a car while the camera does it's job and it would have to be hell boring and I am quite sure most people in his situation could nod off easily.
The person who took this video should be ashamed of themselves, I bet they aren't perfect at work, if they even had a job!