What does it mean when a traffic signal is flashing yellow?

When a traffic signal is flashing yellow, it indicates that drivers should proceed with caution. This warning light signals that you should be alert and prepared to encounter changing traffic conditions, such as pedestrians crossing or vehicles potentially yielding. A flashing yellow does not require a complete stop but encourages drivers to slow down and assess the situation before continuing.

The other choices suggest actions that are inappropriate for a flashing yellow signal—stopping immediately is unnecessary, speeding up can lead to dangerous situations, and turning only right does not capture the meaning of the flashing yellow light since it applies to all directions of travel, not just a right turn. Understanding these signals is crucial for safe driving and helps maintain traffic flow while promoting safety at intersections.