As if they weren't quirky enough already, for the longest time in the 20th century, French cars had yellow headlights. What ...

Light pollution reduction (LPR) filters work because many outdoor lighting sources do not shine evenly across the visible spectrum. Instead, they emit radiation at only a few distinct wavelengths.

From 1937 to 1993, the French government required all cars sold in the country to feature "selective yellow lights" for all forward-facing roadway illumination.

Cyan, magenta and yellow filters transmit two primary colours. Any other colour present in the light is absorbed. A cyan filter transmits blue light and green light. It absorbs red light.

K&F Concept Natural Night light pollution filter: It effectively blocks out yellow and orange wavelengths from entering the lens, we think it's one of the best light pollution filters for general ...

Yellow lights give drivers little time — usually 3 to 6 seconds — to make a decision at an intersection. Here’s what Kansas and Missouri laws say on the matter.

Yellow light change intervals have a minimum duration of 3 seconds and a maximum duration of 6 seconds, according to the Manual of Uniform Traffic Control Devices.