For the most part they don't pick them up anymore, the last I knew there were contractors paid to pick them up along state roads, don't know if that is still in place. It is Penn dot's and municipalities responsibility to keep the roads sided cleaned up. Back when I started with the PGC it was illegal for anyone to pick them up, that is how the officers got stuck with that job. Now that there are permits available for the public to pick them up to salvage the meat there is no reason for them to be task with it. Send people to school for a year and then make them garbage men, makes no sense.
When you are up to your butt in alligators, it is hard to remember your intent was to drain the swamp. Stay focused!