Is it legal to drive my 49cc Go Kart around my neighborhood In Pennsylvania with a drivers license and helmet?
No. A go-cart is not street legal and can only be driven off road or on an approved track. It cannot be driven legally on any public street or highway no matter where. It does not have turn signals, headlight, taillight, or any other required devices to make it street legal.
What is the penalty for not changing a Pennsylvania drivers license to an Ohio drivers license after moving to Ohio?
Don't know what a CPL is. If you mean a CDL (Commercial Drivers License) then it's linked to your personal Drivers License. No license plate is linked to your Drivers License the plates are linked to the registered owner. Any violations on your CDL will be listed and the points lost will be connected to your personal license, as is the other way around. They are just listed differently is all. All accidents, violations, etc…