Why streetlights on Milwaukee interstates, highways are purple

How a stretch of US-19 in Florida became the deadliest road for pedestrians - Vox

Streetlights Turn Purple in Milwaukee – Exponent

Glowing under Purple Street Lights

How are lightbulbs on US interstates changed? - Quora

Years Ago, You Could Buy A Ford F-Series With A Manual Transmission, One Of The Other Greatest Truck Engines, And Get It In Purple: Holy Grails - The Autopian

Have y'all noticed they are replacing white street lights with purple colored lights? : r/Pensacola

Here's Why You're Seeing Purple Street Lights In Some Metro Cities - CBS Minnesota

Missouri & Illinois Street Lights Turning Purple - Flaw or Evil?

Do you know why some Milwaukee highway and interstate lights are purple?

List of streets named after Martin Luther King Jr. - Wikipedia

Do you know why some Milwaukee highway and interstate lights are purple?

Why Are Some US Street Lights Turning Purple? - Foundation for Economic Education

Have you seen purple streetlights on the highway? The Department of Transportation explains why

Why are some streetlights purple on Kansas City highways?

About Those Purple Street Lights On The Roads (Have You Seen Them?) - Your Mileage May Vary