The city finds out you did not pay by cross-referencing your car's plate with the activation database: if the vehicle is parked in a regulated space and there is no active credit for that plate at that time, the system flags the irregularity. It is not "luck" or random enforcement. It is data verification, today increasingly supported by automatic plate reading, which makes the check fast and standardized.
The central piece: the plate as identifier
When you activate your paid session, the credit is tied to the vehicle's plate, with date, time and the duration purchased. Enforcement works in reverse: it identifies the plate of a parked car and asks the system whether that plate has a valid activation right now. If the answer is "no", an irregularity is established. That is why typing the correct plate when activating is so important: the link is to the plate, not to the space.
How the plate is read on the street
There are two main paths, which often coexist:
- Traffic officer with a mobile device: the officer checks the plate on an electronic ticket book and sees on the spot whether there is an activation.
- Automatic OCR reading: cameras mounted on enforcement vehicles or at fixed points read plates on the move and run the check automatically. Areatec operates the largest OCR fleet in the world, with the Aretron artificial intelligence supporting this reading at large scale.
Real-time data cross-referencing
The heart of the process is the comparison between two lists: the plates parked in the regulated area and the plates with active credit. When a plate appears on the first list and not on the second, the system flags a possible case. The technology does not "invent" the infraction: it merely organizes and speeds up a verification that has always been the essence of rotational parking enforcement.
What happens when the system flags a case
Once the absence of an activation is detected, the outcome depends on each city's rules:
- In many municipalities, a TPU (post-use fee) is generated first, a kind of second chance to regularize. Its amount and deadline are set by municipal law and vary (some places charge a few reais with a deadline of hours, others adopt deadlines of days).
- Only if the TPU is not paid (or where it does not exist) does the case escalate to the traffic fine under Art. 181, XVII of the CTB: a serious infraction, R$ 195.23, 5 license points and removal of the vehicle. This amount is federal and fixed; it does not change from city to city.
Legal certainty of the record
For a fine to hold up, the record must be reliable: a photo of the plate, the location, date and time. This set of evidence serves both to support the charge and to guarantee your right to a defense, should you believe there was an error. If you activated and were notified anyway, keep the receipt: it is the proof that the plate had credit at that moment.