Mercedes-Benz, the German luxury marque, has made a significant advancement in the field of autonomous driving technology. The company has launched a unique feature – turquoise-colored marker lights – to indicate when its level three self-driving software, Drive Pilot, is in use.
In the summer, Drive Pilot became the first conditional driver automation system to receive regulatory approval for operation stateside. The Level 3 self-driving technology can operate a vehicle at speeds under 40 mph. Still, a human must be sitting in the driver’s seat and ready to take over should conditions change (i.e. the flow of traffic picks up or an emergency vehicle is present).
To communicate this state of operation to other road users, Mercedes has devised a system of turquoise lights that are illuminated in various parts of the car. They can be found in the headlights, taillights, the mirror indicators, as well as on the steering wheel buttons and the gauge cluster. The purpose of these lights is to signal that the vehicle is operating in autonomous mode, whether it is moving or stationary.
The choice of turquoise was not random. It was the result of several studies conducted in Sindelfingen, where most participants expressed a preference for this color. Mercedes says it picked turquoise for the marker lights in the headlight and taillight clusters as well as the side mirror because the color is differentiated enough from other colored lights that road users might encounter while driving.
The way these lights are used to communicate different states of the vehicle’s operation is another crucial element. For instance, short rows of illuminated dots on the roof are supposed to mean the car has seen and recognized road users, slow flashing is supposed to stand for braking, while rapid flashing translates into the car’s intention to get going. This system of signals has been designed to cover 360-degrees of space around the vehicle, ensuring that everyone can see them clearly.
The introduction of these turquoise lights is not just about aesthetics or novelty. It represents a thoughtful and deliberate effort to address one of the key challenges in the development and deployment of autonomous vehicles: communication. Autonomous vehicles need to interact safely and effectively with other road users, including drivers, cyclists, and pedestrians. These lights serve as a visual language, a way for the vehicle to signal its intentions and actions to those around it.
This development has received regulatory approval in certain jurisdictions. Mercedes S-Class and EQS sedans equipped with Drive Pilot will roll out with turquoise lights starting in the 2026 model year in Nevada, while the lights will only be allowed for testing purposes in California for two years.
The use of turquoise lights is a significant milestone in the journey towards fully autonomous driving. It represents an innovative solution to a complex problem, combining technological sophistication with a simple and intuitive visual language.As autonomous vehicles become more prevalent, features like these will play a crucial role in ensuring their safe and effective integration into our roads and cities.
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