What does a yellow traffic signal generally mean?

A yellow traffic signal generally indicates that drivers should slow down and prepare to stop. This signal serves as a warning that the traffic light is about to change to red. It aims to provide drivers with enough time to react appropriately and ensure safety on the road. By instructing drivers to slow down, it helps prevent abrupt stops that could lead to accidents, especially if vehicles behind are not maintaining a safe following distance.

In contrast, the other options suggest inappropriate responses to a yellow light. Speeding up to pass could lead to dangerous situations if the light changes to red before the driver can clear the intersection. Ignoring the signal altogether fails to take necessary precautions that keep all road users safe, and considering that a yellow light has no meaning is fundamentally incorrect, as it plays a crucial role in traffic control and signaling intent. The emphasis on slowing down and preparing to stop ensures that drivers stay alert and responsive to changing traffic conditions.