Speed cameras and privacy protection: the Court of Cassation, with order no. 31015/2025, clarifies the validity of traffic fines

The relationship between privacy protection and the validity of administrative road traffic penalties has long been at the center of heated legal debates. Many motorists, sanctioned via automatic speed detection devices such as speed cameras (autovelox), have attempted to challenge the violation reports by citing a breach of personal data processing regulations. In the case examined by the Court of Cassation in order no. 31015 of November 26, 2025, the appellant, A. P., challenged the decision of the Court of Rome, arguing that the assessment was illegitimate due to the lack of prior notification regarding the processing of personal data.

The case and the decision of the Supreme Court

The Second Civil Section of the Court of Cassation rejected A. P.'s appeal, confirming the merits judgment of the Court of Rome. The judges took the opportunity to reiterate a clear boundary between the rules established to protect citizens' privacy and those governing road traffic safety. The appellant's argument was based on the premise that the violation of the 2010 Privacy Guarantor's resolution, which implemented Art. 13 of Legislative Decree 196/2003, should invalidate the entire infringement assessment procedure, thereby rendering the pecuniary sanction void.

The principle of law of the Court of Cassation

The Supreme Court resolved the legal issue by formulating the following principle, which categorically excludes the invalidating effect of a privacy breach on a fine:

In matters of road traffic, the obligation of prior notification regarding the processing of personal data, carried out by means of electronic devices for the detection of traffic code violations, introduced for Municipalities by the resolution of the Data Protection Authority of April 8, 2010, in implementation of Art. 13 of Legislative Decree no. 196 of 2003, is functionally correlated to the respect of a confidentiality obligation and does not, conversely, aim to regulate driving conduct; therefore, its non-observance, unlike the violation of information obligations provided for by the road traffic code regarding the presence of said equipment, which constitute guarantee rules for the motorist, does not affect the legitimacy of the assessment and the imposition of the sanction.

As clearly evidenced by the ruling, the judges of legitimacy make a fundamental distinction between two types of information obligations incumbent upon the Public Administration. On one hand, there is information regarding the presence of speed cameras, regulated by the Road Traffic Code, which serves to guide the user's driving conduct and ensure safety. On the other hand, there are information obligations regarding the processing of personal data, which serve solely the purpose of protecting privacy.

Key differences for motorists

To better understand the scope of this decision, it is useful to outline the structural differences between the two information obligations:

• Speed camera signage: Serves a function of prevention and road transparency. Its omission prevents the driver from adjusting their speed in a timely manner, violating a guarantee rule. This defect results in the nullity of the report.
• Privacy notice on data processing: Serves a function of mere privacy protection. Its absence does not affect the dynamics of speed detection nor road safety; therefore, it does not invalidate the fine, although it may expose the Municipality to administrative sanctions by the Data Protection Authority.

Conclusions: a limit to instrumental appeals

With order no. 31015 of 2025, the Court of Cassation confirms a trend already established in the past, putting a brake on appeals based on formal defects unrelated to driving conduct. For motorists, this means that the protection of one's personal data cannot be used as a shield to avoid sanctions resulting from infringements that were correctly assessed from a traffic law perspective. Privacy remains a fundamental right, but its violation finds redress in the competent venues and does not entail the automatic cancellation of speeding fines.