What does a red traffic light indicate?

Answer: C — Stop and wait until the light turns green

A red traffic light indicates that drivers must stop and wait until the light turns green. This signal is a universally recognized rule of traffic control, designed to manage traffic flow and ensure the safety of vehicles and pedestrians. Stopping at a red light helps prevent accidents at intersections, allowing cross traffic to move safely without the risk of collision. The requirement to remain stopped at a red light applies until the light changes, signifying that it is safe for vehicles to proceed. This rule is crucial for maintaining order on the roads and ensuring that all drivers understand when it is their turn to move. Awareness and adherence to this signal are fundamental aspects of safe driving practices in both Germany and other countries.