Here are the car related ones:
-Any motorist driving along a country road at night must stop every mile and send up a rocket signal, wait 10 minutes for the road to be cleared of livestock, and continue.
-Any motorist who sights a team of horses coming toward him must pull well off the road, cover his car with a blanket or canvas that blends with the countryside, and let the horses pass. If the horses appear skittish, the motorist must take his car apart, piece by piece, and hide it under the nearest bushes.
PA has some pretty stupid laws, but I won't be writing my Congressman (like BarryK) about them. lol