Good thing Yellow/Orange in PA is just a warning. The orange chevron's with 35mph in PA are giving you advice on the best speed to take the corner at. If the speed limit was 65mph and the orange signs in PA said 35mph, you could do 65mph around them, but a cop could easily say you were driving too fast for conditions.
BTW Method, please do not confuse driving fast with driving aggressively. My good friend is a PA state trooper that does Turnpike patrol. He's pulled over plenty of cars doing well over 100mph. In some states, over X mph is immediately reckless driving, but like my friend says, you can drive 130mph on the turnpike, and not be driving reckless. In traffic, is a different story.
I drive on the fast side, and if you exclude my "take no prisoner" style driving on the way to blue mountain as Justin and Dan- will attest to, I do not drive aggressively. If conditions permit, I'll take advantage, but I've figured out weaving in and out and passing on the right just doesn't pay off. It might buy you 10 car lengths over an hour in traffic.