I heard about this trap on the radio... not the CB, the FM radio, in the traffic report...
I had a lovely video of this trap including someone actually being chased and pulled over, but my stupid cell phone decided to close the video "application" because the battery was low and I lost it. I had enough time to go home, get my charger, head back, wait in construction on the highway, and try to video it again and they were still there. There were more than two cars the first time I went through, I guess they must've been busy...
[ame="http://www.youtube.com/watch?v=5B02YiTajoo"]YouTube - PA Silver Spring Township ENRADD 114 Part One[/ame]
[ame="http://www.youtube.com/watch?v=E-arzH8HikY"]YouTube - PA Silver Spring Township ENRADD 114 Part Two[/ame]
I've never actually seen ENRADD before this. The sensors were painted white and were a lot smaller in person than I'd thought they would be.