State Police from Newville Barracks sit on the turnpike between mile marker 200 and 220 and nail any cars going over 74 mph. They are most often hiding between mile marker 214/215 right as you come underneath the bridges they are on the other side in the east bound direction although I have seen sitting westbound as well. They seem to be out in numbers during the 3pm-11pm shift and especially on weekends.