Final answer:
A flashing yellow or amber traffic light instructs drivers to slow down and proceed with caution. It maintains traffic safety and warns of potential hazards ahead.
Step-by-step explanation:
A flashing yellow or amber traffic light means slow down, proceed with caution. Traffic signals are critical for regulating vehicle speed and ensuring pedestrian safety. When you encounter a flashing yellow light, it signifies that you should be extra cautious, check for oncoming vehicles or pedestrians, and be prepared to stop if necessary. This is different from a steady yellow light, which advises you to prepare to stop as the light is about to turn red. In contrast, a red traffic light always means to stop until it is safe to proceed or until the signal changes to green.