Adaptive brake lights: a new feature for new cars starting this summer 

Starting July 7, 2026, all new cars registered in the European Union must be equipped with this new rear lighting system. The system is designed to reduce collisions and save precious seconds in the event of an emergency stop.  

The signal changes depending on braking

On the road, any sudden stop can catch the following vehicle off guard, increasing the risk of a rear-end collision. Specifically, to visually alert vehicles behind, the brake lights will automatically flash when braking at speeds above 50 km/h. The brake lights will then switch from a steady glow to a rapid flash.

What parameters are taken into account to activate this system?

No driver intervention is required to trigger the adaptive brake lights. To activate them, the vehicle is equipped with sensors that analyze:  

• Vehicle speed
• Brake system pressure
• ABS activation
• Deceleration rate

The benefit of this feature is based on a physiological principle

The European Union relies on scientific studies demonstrating that the human brain reacts more quickly to a dynamic signal than to a static one. These studies indicate an average reduction of 0.2 seconds in the driver’s reaction time. This may seem small, but in reality, this time savings translates to a distance of approximately 4.4 meters at 80 km/h and nearly 5.5 meters at 100 km/h between the two vehicles. 

Vehicles Affected by This Measure

Owners of vehicles already on the road have nothing to worry about; this measure applies only to new vehicles. Specifically, GSR2 applies to Class 1 vehicles and light commercial vehicles. For motorhomes and heavy-duty trucks, a specific implementation schedule has been established.

Other mandatory equipment starting in July

New driver-assistance features will also be required under GSR2 starting this summer:

• Automatic emergency braking with pedestrian and cyclist detection
• Drowsiness detection
• Intelligent cruise control  
• Lane-keeping assist in critical situations
• Event data recorder, also known as a “black box”
• Technical preparation for a future ignition interlock system using a breathalyzer

Although some vehicles already include this feature—such as certain Hyundai models—the implementation of this regulation will help expand its use and significantly reduce the risk of collisions.