By Jasreet Kaur24, Aug 2024 11:00 AMjagranjosh.com
Do you know
Traffic lights use green, red, and yellow because these colors are highly visible and universally understood. Tap to read why are traffic lights green, red and yellow.
Color Psychology
Red is a universal signal for danger, so it’s used to stop vehicles. Green is calming, indicating it's safe to go.
Historical Influence
Traffic light colors were borrowed from railway signals, which used red for stop and green for go.
Visibility
Red, yellow, and green have high visibility, ensuring they’re easily seen even in poor weather conditions.
Universal Standard
Using the same colors worldwide helps drivers understand signals in any country, making roads safer globally.
Red for Stop
Red has the longest wavelength, so it’s visible from afar, allowing drivers to stop safely in time.
Yellow for Caution
Yellow signals caution or slow down. It’s used because it’s highly noticeable but less intense than red.