How to recognise a ZTL and an active gate

The ZTL sign: a red circle and the plates beneath it

The implementing regulations of the Italian Highway Code (Presidential Decree 495/1992, Article 135(14)) define the “Zona a traffico limitato” sign (figure II.322/a): it marks the start of an area where access and traffic are restricted by time or to certain classes of vehicle. At the top is the white, red-rimmed “no vehicles” circle with the words “zona traffico limitato”. On the way out you will see “fine zona traffico limitato” (figure II.322/b).

What matters is underneath. The Ministry of Infrastructure guidelines (note no. 5050 of 28 June 2019) set the order: days and hours of the ban, then exemptions as symbols (or simply “eccetto autorizzati”, except authorised vehicles), then the words “controllo elettronico ZTL” (“controllo elettronico degli accessi” on older zones), and finally a phone number “per informazioni”. “Controllo elettronico” means a camera reads number plates.

The same circle often appears earlier, on the advance direction sign at the previous junction, on the arrow you should not take. That is the moment to act: the Ministry requires every ZTL to leave non-authorised drivers at least one way round it.

The electronic display: “ZTL attiva” or “varco attivo”

When a camera-enforced ZTL is closed only at certain times, the 2019 guidelines make a variable message sign above the fixed sign compulsory: “ZTL ATTIVA” in red when the ban applies, “ZTL NON ATTIVA” in green when it does not and, in towns with many foreign visitors, “ZTL CLOSED” or “ZTL OPENED” as well. This applies to zones created or changed since then; many older installations still read “varco attivo” or “varco non attivo”. The varco is the monitored entry point: “varco attivo” means the camera is issuing fines, not that the way is open.

Legally, the guidelines treat the fixed sign as the binding one; the display adds the current status but does not tell you how long it will last. The Ministry itself admits that “non attiva” at the entrance can mislead if the zone switches on soon afterwards. And several cities also film the exit: Padua has had 13 exit cameras since May 2023, Lecce has 7 out of 18, Bergamo allows only 15 minutes’ tolerance and Reggio Emilia has four cameras inside the zone. Driving in during a free window is not enough: you must be out before it ends.

The cameras: approved and authorised

Article 201 of the Highway Code allows unauthorised entries into ZTLs, pedestrian areas and reserved lanes to be recorded with no officer present, provided the device is type-approved, works fully automatically and is run by the police. The town must also obtain authorisation from the Ministry to install and operate each system (Presidential Decree 250/1999). Exit enforcement must be switched off if exceptional events trap vehicles inside the zone (Article 198). For drivers living abroad, the fine notice can be served up to 360 days after the offence.

Why your satnav is not enough

A satnav looks for the shortest route; it does not know whether the zone is active right now or whether your plate is authorised. Some navigation apps show ZTL boundaries, but they do not replace the sign. In Florence, the area around Santa Maria Novella station lies inside the zone; in Pisa, the satnav likes to cut through the centre to reach the station. Set a destination outside the zone, such as a car park on the edge, and watch the signs rather than the screen.

What you risk

Passing a gate that is not active costs nothing: the ban is not in force. Passing an active gate without a permit costs €83 to €332 (Article 7), 30% less if you pay within 5 days, with no penalty points; since the 2024 reform only one fine is due per calendar day for the same zone. Some cities let you put things right afterwards: in Palermo the pass can be paid after entering, in Reggio Emilia you can regularise online within 48 hours, and in Florence a hotel inside the zone has 3 hours to register your plate. In Bologna, by contrast, the ticket must be activated before you pass the camera.

You spot the sign too late

Before the camera, turn off into the first permitted street, without reversing or making a banned U-turn, which would be a second offence. After the camera, the day’s fine has probably been recorded already: drive straight to your destination or the nearest exit, without hunting for another way out, and leave before any free window ends. Note the time and place, then ask your hotel or the number on the sign straight away whether your plate can still be registered.

No display: police and bollards

No display does not mean the zone is open. A ZTL closed round the clock has no status to show, and without cameras the display is optional. The fixed sign applies, and the municipal police fine drivers on the spot: in Bergamo they patrol streets without cameras, and in Naples several bans have no announced camera. During events, officers close the entrances, as during the Palio in Siena or on performance evenings around the Arena in Verona.

Pedestrian areas have their own sign, “area pedonale” (figure II.320), and sometimes retractable bollards. In Reggio Emilia the “pilomat” at Piazza Prampolini only drop during delivery slots for permit holders; in Ferrara the squares by the castle and Piazza Ariostea are closed by bollards, with no camera; in Perugia the entrance on Via Bonazzi has them too. Never follow a car over a lowered bollard.