What does a red traffic light indicate?

A red traffic light signifies that drivers must bring their vehicles to a complete stop. This signal is crucial for maintaining traffic safety and regulating the flow of vehicles at intersections, preventing accidents and ensuring that all road users, including pedestrians, can cross safely. When the light turns red, it is an indication for drivers to halt until the signal changes to green, thereby allowing for orderly movement through the intersection. The importance of stopping at a red light cannot be overstated, as it plays a key role in preventing collisions and maintaining traffic order.