B+
Ok
There isn't a bus system, but you don't really need one. Walmart is within walking distance and there are a TON of local restaurants and shops in downtown Carlisle. Having a car is nice if you want to get out. But if you every need to go to a doctor or pick up a prescription from a drug store, Dickinson will give you a free shuttle or pay for a cab. So I've never had a problem getting anywhere.