Why Are Traffic Lights Red, Yellow, and Green?

Ever wondered why traffic lights are red, yellow, and green? Dive into the surprising history, science, and psychology behind this colorful choice! From old-school London to modern tech, we break it all down in a way that's fun and easy to follow. Hit subscribe for more cool engineering stories, and drop a comment telling us your favorite traffic light fact! #engineering #science #history #technology #funfacts

👉 This channel was created in collaboration with https://www.youtube.com/@engenhariadetalhada

0:00 - Introduction to Traffic Light Colors
0:42 - Origins in Railways and Early Traffic Lights
1:48 - Addition of Yellow and Universal Meaning
2:51 - Physics and Visibility of Colors
3:50 - Accessibility and Color Blindness Solutions
5:10 - International Standardization of Traffic Signals
6:07 - The Science and Evolution Behind the System