What does the painted marking indicate for vehicles in both lanes?

The painted marking indicating that vehicles may turn left from the left lane provides important guidance for drivers. This marking helps to clarify the intended maneuvers allowed for vehicles in that lane, facilitating smoother traffic flow and enhancing safety at intersections. By allowing vehicles in the left lane to turn left, the marking indicates that this lane is designated for such turns, helping to prevent confusion and potential collisions with drivers from other lanes who are going straight or making different maneuvers.

The other options suggest limitations or directives that are not signaled by the left lane markings. For instance, options pertaining to vehicles only going straight or only using certain lanes for right turns do not apply to situations where the left lane has been marked to allow left turns. Understanding the significance of lane markings is crucial for safe driving and following traffic laws effectively.