What does a green light mean at a traffic signal?

A green light at a traffic signal indicates that vehicles may proceed through the intersection. However, it is important to ensure that the intersection is clear before moving forward. This means checking for any vehicles, pedestrians, or obstacles that may be present. The green light signifies permission to go, but safety should always come first.

While the other options touch on important aspects of driving, they do not accurately define the meaning of a green light. Stopping and waiting is associated with red lights, proceeding with caution is often more applicable to yellow lights or situations where visibility is compromised, and yielding to pedestrians is a general rule that applies regardless of the traffic light's color, unless a traffic control device indicates otherwise. Thus, the correct understanding of a green light is to go, assuming it's safe to do so.