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Advantages of ambient interior lighting for drivers contrast vision

In the recent years LEDs became the standard light source for the dashboard, instrument panel and switches in automobiles. In the near future LEDs will bring ambient interior light functions into the vehicle. Advantages of the LEDs are a small installation space, low heat dissipation, the long lifetime and, with Multi-Color-LEDs, the possibility of color tunability. Ambient lighting of door surfaces, floor space and roof liner is beneficial, because it improves drivers orientation and thereby the driving safety. However the optimal parameters of color and brightness are not known yet. An investigation of the Light Technology Institute follows this question and presents within this framework, how the choice of the ambient lightings color and brightness affect drivers contrast vision.