Alagoas is small and busy: Maceió and its coast of natural pools receive tourism all year, BR-101 crosses it between Pernambuco and Sergipe, BR-104 climbs to Arapiraca and the agreste, and the sugarcane harvest fills the routes with trucks from October to March. Infractions are applied by DETRAN-AL in the registry, by Maceió’s SMTT and the municipal bodies in the cities, by the military police on state roads and by the Federal Highway Police on federal ones.
Context and authorities
Infractions are governed by the Brazilian Traffic Code: each has a fixed value, a seriousness and a number of points recorded on the licence of the identified driver, and they are notified in two stages, the citation and the penalty, with periods for the prior defence and the appeal. The state DETRAN, municipalities with municipalised traffic and the Federal Highway Police apply them; SENATRAN coordinates the national systems.
DETRAN-AL keeps the plate and RENAVAM register, where each infraction is entered, and processes the prior defence and the appeals before the JARI; SMTT enforces Maceió with cameras and agents, and Arapiraca has its own municipal body. DER-AL enforces the state roads towards the northern coast and the Federal Highway Police BR-101 and BR-104; no overdue fine may remain pending when licensing the vehicle.
What the API returns for this jurisdiction
In Alagoas a plate, with the RENAVAM when the source requires it, is sent to the Brazil fines API, which walks its integrated sources and returns each infraction with the body that recorded it:
- The body that recorded the infraction and its number, unnormalised.
- The date and reason, with the location if the source reports it.
- The value and status current at the source.
- Which sources answered and which did not, on every lookup.
How to check a plate in Alagoas
To check a plate by hand, the DETRAN-AL portal shows the infractions and the licensing status with the plate and the RENAVAM, and the Carteira Digital de Trânsito app, coordinated by SENATRAN, concentrates the notices of every body. With ten units that is enough; with a hundred, the API walks the integrated sources by plate and returns the result split by body.
What to watch if you run a fleet in Alagoas
A harvest fleet taking cane from the mills to the plants on BR-101 and the state roads piles up weight and camera infractions on units that change driver every trip; a plate lookup at the close of each month, stored per body, lets you name the driver before the citation period expires.
For a rent-a-car in Maceió delivering cars for Maragogi and the northern coast, the plate lookup at the return of each rental charges the customer the DER or SMTT infraction that would otherwise show up at licensing.
How to integrate
Each vehicle is sent in a POST, with the jurisdictions to include if you do not want to query all of them. The response accepts the job and the result is retrieved by status lookup or arrives by webhook once the sources finish answering. The vehicle lookup quality guide explains how to handle a source that did not answer.
{
"plate": "ABC1D23",
"jurisdictions": [
"BR-AL"
]
}Limits and considerations
- Infractions on federal highways are recorded by the Federal Highway Police and are checked in the national channels, not at the state DETRAN.
- Values are those of the traffic code current at the time of payment, with the applicable discount or surcharge; the final amount is set by the body.
- A source that does not answer is reported as such, never as an absence of infractions.
- The API neither pays fines nor files defences; it delivers information to decide.

