What is the purpose of a flashing yellow traffic signal?

A flashing yellow traffic signal serves a critical purpose in traffic management by alerting drivers to proceed with caution. This signal indicates that while drivers are not required to stop, they should reduce their speed and be prepared to react to any hazards or incoming traffic. The intent is to enhance safety at intersections or in areas where visibility may be limited, prompting drivers to be more vigilant.

In contrast, a continuous red signal prohibits all traffic movement, ensuring that vehicles come to a full stop. An upcoming red signal is typically indicated by a solid yellow light rather than a flashing one. Lastly, a flashing yellow does not suggest that traffic can move freely; it requires attentiveness and careful navigation through potentially unpredictable situations, balancing the need for traffic flow with safety considerations.