Why Are Brake Lights Red?

What Crafty Clover says in this video

Intro

Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. Why are brake lights red?

The Big Idea

Brake lights are red because red light can be seen from far away! Red is not scattered as much by fog, dust, and rain. And people quickly learn that red means stop.

Red Travels

Step one: red travels well. Red light is not scattered as much by fog, dust, and rain as other colors. So it can be seen from farther away.

Red Means Stop

Step two: the meaning. People also quickly learn that red means stop. A red light at the back quickly says, slow down.

Front and Back

Step three: front and back. Cars have red brake lights at the back so drivers behind notice when the car is slowing down. White lights point forward, and red lights point backward.

A Closer Look

Let's take a closer look! White lights point forward. Red tail lights point backward. Brake lights shine even brighter. So the driver behind knows you are slowing.

Quick Facts

Quick facts! Brake lights are much brighter than ordinary tail lights, which is how you can tell the difference. Red has the longest waves we can see, so it scatters the least. Many cars also have a third brake light higher up. Lots of brake lights are LEDs, which switch on very fast.

Think Like a Scientist

Now, think like a scientist! From a safe spot on the sidewalk, with a grown-up, watch cars from behind as they slow down. Can you tell the difference between tail lights and brake lights? Count how many cars you see in 5 minutes. Stay well back from the road.

Outro

Brake lights are red because red is easy to see and means stop. Science is amazing! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!