North-bound and South-bound San Ramon Valley Boulevard between Marsh Road and Bollinger. Motorcycle cops like to sit in the Marriot Hotel Parking lot and aim radar at unsuspecting vehicles driving the curve going North on San Ramon Valley Boulevard. For South-bound traffic, try to remain at the posted limit of 40mph because the motorcycle cops are perched on the right-side just inside the road turn-ins. You are still not clear even if you pass the church on the right. Be warned.