This particular trap is off of I-680S and 84-W on Niles-Canyon Rd. There is a section when you go under a bridge and then come back up to ground level where there is a good amount of road that is good for losing track of your speed. There is a turn that curves to the left and that’s where the cop is usually waiting. It is under a tree that hides him in the shade. And since it’s a cop on a bike, you can’t see him until you get in his range to trap you. Keep a sharp lookout.