What does a filter light indicate?

A filter light is designed to indicate that drivers may proceed in the direction of the arrow shown, typically while being vigilant about other vehicles or pedestrians that may also be at the intersection. This kind of signal allows for a specific movement while managing traffic flow, particularly in complex intersections where multiple movements need to be coordinated.

When the light displays an arrow, it typically means that it is safe to move in the direction of the arrow, as the opposing traffic is likely being held at a red signal. Therefore, following the guidance of the filter light not only facilitates a smooth driving experience but also enhances safety by clearly delineating permissible movements at intersections.

Understanding the function of a filter light is crucial because it helps drivers recognize when they have the right of way without needing to stop, provided the road is clear and no other obstacles are present. This aids in effective traffic management and reduces confusion at intersections.