As you come down Edgewod Road from 280 into Redwood City/San Carlos there are two locations where police oficers sit and wait for speeders. One is after you come down the large hill before Edgewood Park. An officer will be parked in the entrance to Edgewood Park so as you round the corner from coming down the large hill he will be there to get you going way over 45! (It’s a steep downgrade). The second is further dwon Edgewood Road near Alameda de las Pulgas. The speed limit changes from 45 to 35 with only one sign and the oficer sits in the parking lot to the church on the right so as soon as you come into that residential area from the hills he has his radar gun right on you.