The module was designed around three distinct LED matrix illumination modes. Full-field mode activates the entire circular signal face, presenting the display as a pure illuminated surface. Negative symbol mode lights the surrounding field while leaving the symbol dark, reflecting the visual logic often seen in European traffic signals for red and yellow directional indications. Positive symbol mode reverses this relationship, illuminating only the symbol itself against a dark background, most commonly associated with green arrow signals. This system allows the same hardware to display different traffic symbols or graphic instructions while preserving a consistent visual language across multiple signal states.
The signal head was developed with two visor variations, both designed to shade the LED matrix and give the module a more controlled viewing direction. The first uses a rounded tunnel-style visor with a fuller circular profile, creating a classic traffic-signal silhouette and a deeper sense of enclosure around the lens. The second uses a more elliptical, compressed visor profile, reducing the visual mass while keeping the same protective function. Together, the two versions show how a small change in the visor geometry can shift the character of the whole object, from heavier and more traditional to flatter, sharper, and more contemporary.
