Simple enough. But what happens when you live in a culture where green also means blue? (Before we answer that, here's why ...

If you see solid blue lights behind you, there's nothing to worry about, nor do you need to pull over — the cruise lights just mean that the police are in the area, not that a traffic stop is ...

Here’s how they work and what are they used for: • Signal activation. The blue lights are wired into the traffic signal system and turn on when the traffic light changes to red.

How they work and what are they used for: 1. Signal Activation: The blue lights are wired into the traffic signal system and turn on when the traffic light changes to red. 2. Officer Visibility ...

Question: I’m wondering about a light that seems to only be on at night on the traffic lights. It’s a small purple or blueish ...