Chemists John Bullough, Jakoah Brgoch, and Ram Seshadri were curious to come up with a conclusion on why the streetlights turned purple at night. They studied at the University of Houston, Texas A&M University, and University of California, exploring various possible explanations.
Streetlights are made with Blue, Red, and sometimes yellow LED lights that create the white lighting that powers the streetlights. This way, drivers and people walking outside at night can stay safe and have some sort of lighting.
The problem is that the streetlights were recently turning purple, which is not good for the eyes of people and can confuse drivers who drive at night. Scientists hypothesize that the layer around the light peels off, exposing the blue LED light underneath and making the light turn purple. However, the light would completely go dark or turn off-white if that was the case.
Unfortunately, the scientists were only left with a hypothesis that didn’t provide enough information to tell if they were right or wrong. Researchers recommend that if a driver or walker sees a purple street light, they should try and get away from it as soon as possible so they don’t experience any blurriness or blackness in their vision at nighttime.
In conclusion, there is no answer that scientists can provide us with. Drivers are recommended to just try and stay safe and be curious when outside after dark.