Speed bumps in France mostly illegal

In France, around 450,000 speed bumps exist, but the majority are considered illegal. The association Pour une mobilité sereine et durable (PUMSD) has filed a criminal complaint against 152 mayors in the Var department, accusing them of violating regulations by installing these traffic calming devices inappropriately.

Regulations not followed

According to PUMSD, 98% of speed bumps are illegal because they are placed on roads with high traffic or used by public transport. These installations often ignore the 1994 decree, which sets strict conditions, such as limiting them to urban areas with 30 km/h speed limits and requiring them to be part of broader speed-reduction measures.

Cerema guides not binding

The association argues that mayors use Cerema technical guides to justify speed bumps, even though these guides are not legally binding. Thierry Modolo-Dominati of PUMSD says that mayors rely on them because strict adherence to the decree would severely limit their ability to install speed bumps.

Environmental and safety concerns

PUMSD claims that illegal speed bumps may increase pollution, delay emergency services, and cause accidents involving cyclists and motorcyclists. The association wants to investigate the engineering firms involved, accusing them of failing to follow legal obligations when installations contradict the rules.

Pollution and economic impact

The association estimates that these speed bumps could cost 18.7 billion euros annually in economic losses due to pollution, noise, and delays. However, these figures are not officially validated and remain unconfirmed by independent analysis.

Government response and legal uncertainty

The government says each speed bump must be assessed individually, and road users can request its removal or modification. A new regulatory framework is expected to clarify the rules, but for now, local authorities are advised to review their existing infrastructure.

Court decisions vary

Judicial outcomes have been mixed. In July 2024, the Toulon administrative court ordered the removal of two speed bumps in Vinon-sur-Verdon after PUMSD's legal action. However, other courts have upheld different interpretations of the 1994 decree, especially regarding certain types of speed bumps like cushions and plates.

Future regulatory plans

The government acknowledges these legal differences and is working on a new regulatory framework to cover the five main types of speed bumps. PUMSD plans to continue its efforts, including sending a letter to the transport ministry to apply the NFP98300 standard, aiming to resolve the regulatory confusion. The final outcome will depend on both evolving regulations and court rulings on pending cases.