Why red, yellow, and green are chosen for traffic lights

Red, yellow, and green are universally recognized colors, ensuring consistent traffic signals across different countries and regions.

Driver safety is increased by these colors since they are readily visible against a variety of backgrounds and in a range of lighting conditions.

Red is thought to be the color that draws attention the most, alerting cars to stop quickly and guaranteeing safety.

Red universally means 'stop', green means 'go', and yellow indicates 'caution', simplifying driver understanding and decision-making.

Red, yellow, and green have different wavelengths, it is easier to distinguish between them and less likely that people will become confused.

Drivers' actions are guided in a smooth and safe manner by the predictable sequence created by the progression from red to green through yellow.