Pa Route 80 mile marker161 traveling West in a group of cars non of which were speeding. Two state police cars parked in median. A few minutes later see police turn on and off warning lights passing cars behind me in a distance. Flies next to us and slows staying in my blind spot. He drops back but stays in left lane eventually pulls behind me. Follows for a few minutes before conduction stop. Pull off onto grass area giving safe access for police to approach. Trooper goes to passenger side where my wife sat. Asked to have our info and informed pulled over tint to dark. Our tint is lighter than some factory tint. I told him it was professionally done to ensure it was legal. Went back to his car min later came back to passenger side said only issuing a warning nothing needs done.Told me to step to the back of the car and he will explain everything about the warning. I go to the back and he starts questioning where am I going, why, who am I see, how long, when returning, plan on moving to Ohio, am I allowed to leave the state. Asked if there were any guns, drugs, money inside the car. Then told me to put my hands on the cruiser and told the officer to search me while he talks to my wife. Tells her to get out of the car and go to the front and then ask if I would mind if he searched the car. Had nothing to hid and let them search. My background 49 year old white male car 06 Cobalt 1999 Child pornography charge listed on Megans law. Asked my wife if she was ok, do you need any help along with all the same questions asked me. Eventually 30-45 minutes later free to be go. A few minutes later again see the trooper speeding up behind us catches up to us and follows us for the next 10 miles until the next exit and he got off.