Police set up the trap at either end of the roadway, and enact the Traffic Stop at the other end. Hersheypark Drive (extension) runs from N. Linge Ave., to Pa Route 743 (Laudermilch Road) in Derry TWP, the roadway length is about 1.75 miles long, the speed limit is 45 M.P.H. The roadway is a bypass to a crowded residental road and motorist usually speed excessively on this road. P.D. will usually set up the trap on either the WB or EB roadway (both have 2 lanes) and have a parent car on the other side of the roadway.