Given its historic nature, the city center is clearly not designed for modern traffic's needs and vehicles. The area of greatest tourist interest coincides with the ZTL ("Zona a Traffico Limitato" or Limited Traffic Zone), a restricted traffic area controlled by a network of video cameras.

Essentially what the ZTL means is that unless you are one of the vehicles mentioned above (resident, bus or taxi) with a permit, you cannot enter into the city center during the following times: Weekdays from 7:30 am to 8 pm. Saturdays from 7:30 am to 4 pm.

Tourists that travel by car and who need to travel within the ZTL to reach their accommodation facilities or a garage can obtain a temporary access permit. In order to obtain this permit, communicate your licence plate number to your accommodation facility (or garage); they will forward it to the appropriate office.