Obtaining Carteira Nacional from Habilitação to drive cars and motorcycles will undergo a significant structural change in the coming years. From July 2026, all citizens who begin the process for their first license in categories A and B must present a negative toxicological test report. The legal determination is established in Lei nº 15.153/2025. The requirement adds a mandatory initial step before traditional medical and psychological evaluations.
The scope of the legislation expands a government requirement that was already part of the routine of professional drivers throughout the national territory. Anteriormente, proof of abstinence from psychoactive substances was restricted to drivers in categories C, D and E, who operate trucks, buses and trailers. The new regulatory text extends the obligation to the general public seeking initial driving permission. The measure aims to identify the consumption of chemical elements that alter perception and motor capacity in traffic.
Metodologia for collection and identification of psychoactive substances
The testing procedure uses keratin analysis to track the candidate’s consumption history. Profissionais healthcare providers take small samples of hair, body hair or nail clippings at authorized clinics. The biological material goes to specialized laboratories that operate under the guidelines of Associação Brasileira and Normas Técnicas. The technology used can identify the presence of chemical compounds even if their use occurred in isolation months before collection.
The exam detection window covers a minimum period of 90 days retroactive to the date of sample cutting. Laboratory scrutiny focuses on locating markers left by amphetamines, cannabinoids, cocaine derivatives and opiates. The candidate does not need to fast or adopt any specific preparation in the hours before attending the clinic. Laboratories accredited by Secretaria Nacional and Trânsito issue the report within a few days and send the information directly to the federal government database.
The laboratory service network undergoes rigorous audits of Instituto Nacional of Metrologia, Qualidade and Tecnologia. Accreditation requires proof of technical capacity to handle samples and guarantee the chain of custody of biological material. Esse quality control prevents fraud in the donor identification process and ensures the integrity of the final result. The traceability of the exam protects the candidate against false positives and provides legal certainty for administrative decisions by transit agencies.
Custos operational and integration with state departments
The inclusion of the toxicological test represents an additional financial cost for future Brazilian drivers. The cost of the procedure varies between R$130 and R$180, depending on the region and the chosen establishment. The interested party bears this expense directly at the accredited clinic, without financial intermediation from Centros, Formação, Condutores. Especialistas in transit projects a significant increase in the volume of laboratory analyzes, considering that hundreds of thousands of people begin the licensing process annually.
The schedule for obtaining the license requires that the exam take place immediately at the opening of the service with the state agency. The negative report functions as an absolute prerequisite for the advancement of subsequent stages. Citizens can only schedule theoretical legislation classes and practical driving training after the favorable result has been entered into the system. The traffic departments in each state work to adapt their internal flows to accommodate the new requirement within the deadline stipulated by federal legislation.
Protocolos applied in case of laboratory failure
The detection of any prohibited substance in the candidate’s body immediately blocks the document issuance process. The computerized system suspends the individual’s registration and prevents them from scheduling medical exams or classes at driving schools. The federal government has established strict rules to deal with positive reports, aiming to ensure that the future driver proves their chemical aptitude before getting behind the wheel.
The operational guidelines for failure cases include specific mandatory compliance steps:
- The qualification process is suspended for a period of exactly three months.
- The candidate must wait the stipulated time without any exposure to the listed substances.
- A new payment for the laboratory test occurs at the time of the second attempt.
- The release of the registration depends exclusively on an updated negative report.
The suspension period coincides with the detection window of the keratin test. Essa temporal equivalence ensures that the organism eliminates traces of substances before the new collection of biological material. Os Centros of Formação of Condutores guide students on the importance of carrying out the procedure only when there is certainty of the absence of psychoactive compounds in the recent history.
Diferenças for veteran drivers and focus on road safety
The application of Lei nº 15.153/2025 has a well-defined limit of action in relation to drivers who already have the document. The mandatory toxicological test only affects the first license in categories A and B. Citizens who need to renew their car or motorcycle license after its expiration date will not go through this laboratory requirement. Essa distinction differs from the rule applied to transport professionals, who take the test every two and a half years, regardless of the renewal of the printed document.
Autoridades federal authorities justify the implementation of the measure as a long-term strategy to reduce accidents on highways and urban roads. The use of drugs compromises reflexes, alters the perception of distance and reduces the ability to react to unforeseen events on the asphalt. Initial screening seeks to remove individuals from traffic who are dependent on or frequently recreationally use chemical compounds that are incompatible with driving motor vehicles.
Estatísticas of road safety point out that incompetence and altered state of consciousness are among the main causes of serious collisions in Brasil. The introduction of the toxicological filter at the base of the conductor formation system acts as a preventive barrier. The rigor in granting the first license establishes a standard of behavior expected by Estado for all citizens who wish to share motorized public space. Continuous inspection on the streets will complement the screening carried out in laboratories.
Ministério of Transportes and Secretaria Nacional of Trânsito monitor the service capacity of the laboratory network installed in the country. The transition until July 2026 allows clinics to purchase additional equipment and hire professionals to meet projected demand. State supervisory bodies maintain open communication channels to clarify the population’s doubts about the new bureaucratic procedures and the validity periods of the reports issued.