At an intersection with a traffic light, when is it appropriate to make a left turn?

Making a left turn at an intersection is appropriate when the traffic light is green and there is a specific left turn signal. This indicates that it is safe for you to proceed with the turn while controlling the traffic conditions. The left turn light not only suggests that you have the right of way to turn left, but it also ensures that opposing traffic is either stopped or has a red light, providing a clear pathway for your maneuver. This rule is designed to enhance safety at intersections where left turns could lead to conflicts with oncoming vehicles.

In contrast, making a left turn when a red light is showing is generally not allowed unless there are special circumstances, such as a permitted turn on red after stopping. A yield sign pertains to situations where you may need to give way to others, but it doesn’t specifically apply to traffic lights. Simply waiting until there are no cars coming lacks the structure provided by the traffic light and does not account for the potential presence of pedestrians or the rules of the road. Thus, adhering to the traffic light signals and, where applicable, left turn lights, is crucial for safe driving at intersections.