Yvelines: Helmet and high-visibility vest compulsory for electric scooters from September 15.

Electric scooter users in the Yvelines region will have to upgrade their gear before hopping on. Starting Tuesday, September 15, 2026, wearing a helmet and a high-visibility vest (or reflective gear) becomes mandatory on all public roads across the department, from Versailles to Mantes-la-Jolie via Saint-Quentin-en-Yvelines. Monowheels, gyropods, and hoverboards are likewise covered, as they fall under the category of motorized personal mobility devices (EDPM).

The measure had been announced during the summer by the Yvelines prefect, Brice Blondel. It is now official, with an order signed at the beginning of September. And the 2025 figures provide a fairly clear sense of what motivated the decision.

Helmet and high-visibility vest for scooters: what does the decree require in the Yvelines department?

The prefectural order No. 78-2026-09-07-00004, as outlined in the Yvelines prefecture press release, imposes two new obligations on anyone using a personal motorized mobility device (PMMD) on public roads:

• the wearing of a helmet that complies with regulations, on all roads, including cycle paths;
• the wearing of a high-visibility vest or a reflective equipment, at all times.

The detail that changes everything is this “at any hour.” Until now, the national rule mostly required reflective gear at night or when visibility is poor, as France 3 Paris Île-de-France notes. In Yvelines, the vest must now be worn even in broad daylight, even on a bike path well away from traffic.

Why is helmet use on kick scooters about to become mandatory in Yvelines?

In 2025, the department logged 59 bodily injuries involving a motorized personal mobility device, up from 23 the previous year. The figure more than doubled in a year, averaging just over one accident per week.

The human toll is heavy: three dead and 58 injured over the year. All of the fatalities occurred at night or in low light, and only 14% of victims wore a helmet. Two figures that directly explain why the prefecture has relied on this helmet-and-high-visibility-vest duo.

Emergency services are seeing it on the ground as well. Firefighters from the SDIS 78 were called out 427 times in 2025 for accidents involving electric scooters, monoroues, gyropodes, or hoverboards, averaging more than one incident per day. This is not a local trend: according to the National Interministerial Observatory for Road Safety, the death toll among scooter users nearly doubled in France between 2024 and 2025.

• To be read
• Best bets for the week of September 14–20, 2026 in Paris and Île-de-France

What is the fine for forgetting your helmet or safety vest?

From September 15, 2026, riding without a helmet or without a high-visibility vest in Yvelines could incur a fine of up to €150 per missing item. A rider going bareheaded and without a vest could face up to €300 in total.

This ceiling matches the cap for second-class fines, which conventionally carry a €35 fixed penalty. The prefecture, however, did not specify the exact amount that will be charged during checks. For comparison, Paris and its inner suburbs impose €135 for not wearing a helmet and €35 for lacking reflective equipment.

Electric scooters: which rules still apply?

These two obligations do not replace anything. They add to the rules already applicable to PMD users, whether the device is personal or rented:

• Minimum age to operate a personal mobility device is 14;
• Only one rider per device;
• Speed is capped at 25 km/h;
• Insurance is mandatory for all devices;
• No handheld phone use and no wearing headphones while riding;
• Ride on cycle lanes where available, and do not ride on sidewalks unless explicitly authorized.

The prefecture is urging everyone to behave responsibly, for their own safety and that of pedestrians, cyclists and motorists. Several towns are already spreading the message to their residents, including Saint-Rémy-lès-Chevreuse and Orgeval.

Where is a helmet already mandatory for electric scooters in Île-de-France?

With this decision, Yvelines joins a growing Île-de-France list that has been expanding since the start of summer. Seine-et-Marne kicked things off on July 3, 2026, followed by Hauts-de-Seine on August 1, a change we detailed in our article on what becomes mandatory for electric scooters in Hauts-de-Seine.

On August 7, a ruling from the police prefect extended the rule to Paris and the entire inner and outer suburbs. We had previously taken stock of the fines facing scooter users in Paris, but also of a question that keeps coming up: is the high-visibility vest mandatory only at night or also in broad daylight?

According to the August update from France 3, Essonne and Val-d'Oise had not yet issued a departmental decree, even though some towns in Val-d'Oise already require helmets on their territory. Rules are changing quickly from one department to the next. If your routes take you from Saint-Germain-en-Laye to Rueil-Malmaison or from Vélizy to Paris, the simplest option is to keep a helmet and a high-visibility vest on you whenever you go out. The fluorescent vest may not win any fashion awards, but tucked into a backpack it’s quickly forgotten.