Automatic enforcement cars are vehicles equipped with plate-reading cameras (OCR), GPS and artificial intelligence that drive normally along the streets and check, plate by plate, whether each parked vehicle has an active paid session. Instead of an officer checking space by space on foot, the car sweeps entire blocks in minutes, cross-referencing what it reads with the activation database in real time.
What happens on a single pass of the car
- Image capture: side cameras photograph the plates of parked vehicles as the car moves.
- OCR reading: the software converts the plate image into text (the plate's characters).
- Geotagging: the GPS marks the exact position and the time that vehicle was seen.
- Cross-check with the database: the system checks whether there is an active credit for that plate in that area.
- Triage: if there is payment, it moves on; if not, the record is set aside for review.
The role of artificial intelligence
Areatec's AI, Aretron, improves reading under real street conditions: dirty plates, difficult angles, sun glare or rain. It also filters out false positives — for example, moving vehicles, loading/unloading spaces or exempt areas — so that only genuinely irregular cases move forward. This makes enforcement more accurate and fairer. Areatec operates the largest OCR fleet in the world dedicated to this type of monitoring.
From detection to a possible charge
Detecting an irregularity is not the same as fining. Typically, the vehicle generates an evidence record (plate photo, date, time and location) and the flow follows the municipality's rules:
- Where a Post-Use Fee (TPU) exists, this administrative charge is usually generated first, with a window to regularize. The TPU is not a fine, generates no license points and its amount/deadline are municipal.
- The traffic fine (Art. 181, XVII of the CTB — serious, R$ 195.23, 5 license points) is generally the last step, and the infraction notice is issued by a traffic authority officer. This amount is federal and fixed.
Chain of evidence and the right to appeal
Each record stores a geotagged image with date and time, forming a chain of evidence that gives legal certainty to the process — and that the driver can also use to contest the case, should the reading have been mistaken. The accuracy of the OCR and the traceability of the data are precisely what underpins both the charge and the right to a defense.
Why cities adopt it
The OCR car increases enforcement coverage, improves space turnover and reduces the need for manual checking. For the driver who activates their credit correctly — in seconds through the Digipare app, in the cities served by Areatec — the car's pass is seamless: nothing happens, because the payment is already in the database.