How did the invention of the traffic light have an effect on the world?

The invention of the traffic light revolutionized road safety and traffic management by providing a systematic way to control vehicle and pedestrian flow at intersections. Introduced in the early 20th century, it significantly reduced accidents and improved the efficiency of urban transportation networks. As cities grew and vehicular traffic increased, the traffic light became essential for maintaining order on the roads, ultimately influencing urban planning and the design of modern infrastructure. Its impact extends globally, contributing to safer travel and the development of smart traffic systems today.