I was looking online for maps of central Palermo and came across this one showing a free shuttle bus that appears to do a continuous loop of the historic area of the city.
I wonder if anyone can confirm if this bus is still in operation?
The map was dated four years ago.
https://i.pinimg.com/originals/2b/51/d7/2b51d7fd8431d0a2048313d1ab63210f.jpg