In the past, seeing blue lights on a car meant the police wanted our attention. Nowadays, some regular cars have headlights that seem to glow with a blue tint. Newer LED headlights glow brighter ...

If headlights were made with a 10000K color temperature, for example, they would appear blue but wouldn't emit much light. HID and LED headlights are typically right in the middle, around 6000K ...