Just yesterday I was going southbound on 287 coming from 208 and I came upon a greyish impala? tinted windows in the grassy median, shooting laser at North Bound traffic. It was obvious it was a cop, no hub caps, tinted windows, I assume it was state police. Anyway, this speed trap was on the part of 287 where if you're going North there is a pretty big hill with a rock wall on the right hand side, the cop sits at the bottom where it levels out and gets alittle rolly so its harder to spot him, especially if you're coming southbound, you'll see him once you're on top of him. The trap is about 300 yards before exit 52a.
Just be alert.