The blue lights are active whenever a traffic light is red.
Blue traffic light meaning.
Next time you are out and about look at the traffic lights.
Instead they display services for travelers.
With this officers patrolling certain intersections can wait in a spot that is safer to pull out if they have to catch a driver who ran.
The blue lights are in sync with a red traffic signal allowing officers to see a violation occur.
Various types of these are used throughout the us here in florida we use a bottom mount white light as shown below.
So while it may appear that japan uses blue traffic lights the government assures us it s actually just a very blue shade of green green enough to satisfy international regulations blue.
I know in miami some green traffic lights have a.
Blue signs that are blue in color are not regulatory signs.
Quora user is closest to the real answer.
Blue is added to a green traffic light and orange added to a red traffic light.
These signs are normally found on expressways and highways directing motorists to where they can find places such as rest areas tourist sites hospitals hotels gas stations restaurants campgrounds picnic areas and other services commonly used by motorists.
If you notice a blue light bulb lighting up someone s porch this is the meaning.
Any time a traffic signal is red the blue light appears on the opposite side.
These red light enforcement lights are used to permit law enforcement to know when a light is red even if they can s see it.