What does a traffic signal ahead sign indicate?

A traffic signal ahead sign serves as a warning to drivers that they are approaching an intersection controlled by traffic lights. This sign is crucial for preparing motorists to slow down and be alert for changing traffic signals. It indicates that a traffic light is present and that they should be prepared for any situation, including the possibility of a red light.

Being aware that the light may be red is important for safe driving, as it requires the driver to stop if the light changes. The sign does not specify what color the light will be when a driver arrives at the intersection; rather, it simply signals the presence of a signal that could be red, green, or yellow.

Thus, the primary function of the sign is to prepare drivers for any potential traffic stoppage that could occur, enhancing safety for both the driver and other road users.