What if the key to car safety lay in transparency? As screens invade our dashboards, discover how UX design transforms the windshield into an indispensable ally for reducing distractions while driving.
Automakers are no longer content with so-called "classic" displays to reduce driver distractions. They are completely rethinking display areas and exploring more intuitive and revolutionary technologies: head-up displays (HUDs), "pillar-to-pillar" screens like those used by BMW , or transparent screens projected directly onto the windshield, like the project led by Hyundai in partnership with Zeiss.
These innovations share a common goal: to improve the readability of information in order to enhance safety and driving comfort.
In this article, we address the main challenges posed by transparent screens in the vehicles of tomorrow, as well as ways to design a UX adapted to this technological revolution.
Windshield displays are subject to several technical constraints that UX teams must consider: optical alignment, field of view, image depth, and optimal readability in varying lighting conditions. These developments promise to transform in-car usage and encourage UX designers to rethink the automotive user experience.
The UX challenges of transparent screens in the automotive industry
The integration of transparent screens in automobiles will revolutionize interface design. These devices, which literally blend into the windshield, offer new immersive opportunities, but also raise numerous ergonomic and safety issues that must not be overlooked.
Car manufacturers must take into consideration many essential factors: geometry, viewing angles, projection techniques, energy consumption, space constraints, environmental conditions, costs, and lamination requirements.
Challenge 1: Readability and transparency
Achieving quick and intuitive understanding of information, without distracting the driver, is a major challenge for transparent displays. To guarantee a consistently readable interface, UI/UX constraints must be rigorously considered: transparency, color choices, shapes, typography, and content adaptation to the real-world environment.
Regarding text and icons, it is recommended to use "floating" 3D shapes , clearly detached from the surrounding scene, and sizes large enough to suit a wide variety of drivers. These elements facilitate perception, even when the background is complex or changing rapidly.
Regarding colors, a key point is that black areas become completely transparent on transparent screens. It is therefore essential to select palettes offering high contrast to ensure optimal readability regardless of lighting conditions (day, night, backlighting) or the complexity of the outdoor setting.
Challenge 2: Information Hierarchy
Transparent screens, projected directly onto the windshield, offer a unique opportunity: displaying essential information without taking the driver's eyes off the road or obstructing their field of vision . This approach significantly reduces cognitive load, eliminates the need to glance back and forth between the driver and the dashboard or central screen, and allows for faster reactions to driving situations.
To fully leverage this technology, UX teams must implement a rigorous information hierarchy. It is crucial to ensure that the elements essential to the driver (speed, navigation, critical alerts) are always prominently displayed.
The real UX challenge lies in the optimal placement and prioritization of information . An overly cluttered or poorly designed display can quickly become a source of distraction. The key is therefore to find the right balance between visibility, readability, and priority , so that technology truly contributes to security and not the other way around.
Challenge 3: Overall Experience (intuitive, customizable interaction and multisensory)
To deliver an optimal user experience with transparent screens, it is essential to consider UX holistically. The UX team must design systems capable of combining visual, auditory, and haptic stimuli to enhance perception, guide driver attention, and reduce cognitive load, all while minimizing distractions on the road.
We cannot discuss a multisensory experience without addressing the issue of personalization . One of the most effective levers is to offer the driver the possibility of adapting the interface according to their preferences: choice of information displayed, level of detail, positioning in the visual space or even display style.
This personalization allows us to meet the specific needs of each driver, making the interaction more pleasant, more comfortable and above all more efficient.
Ultimately, this multi-sensory and customizable approach offers a smoother and more intuitive experience, reduces stress while driving, and thus helps to enhance driver safety.
Conclusion
Technological advancements are profoundly transforming the automotive sector. Thanks to innovations like transparent screens, manufacturers can enhance driver safety and comfort. To ensure these benefits are fully realized, UX teams must support these developments and design concrete, customized, and high-quality solutions.
Marwa Frawes, Project Manager (Business Analyst) at UX-Republic
