>Outside of the US, blue is often used for police and emergency services due to biology reasons (visibility for those with poor eyesight) Flashing blue is used

>Outside of the US, blue is often used for police and emergency services due to biology reasons (visibility for those with poor eyesight) Flashing blue is used for police and emergency vehicles in the US as well and is illegal to use for other purposes in all the states I've bothered to know the local laws of (city/state snow plows being the one exception I believe). This light is very much not blue, it's turquoise which they say in the article. I have no idea why they say blue in the title because people definitely don't think "turquoise" when they hear "blue".