What does a green traffic light mean for a commercial vehicle?

A green traffic light indicates that the commercial vehicle can proceed through the intersection, but it's important for the driver to do so with caution. This means being aware of other road users, including pedestrians and other vehicles, who may still be in the intersection or attempting to cross. While a green light allows for movement, safety is paramount, so yielding to those who may have the right of way is essential.

The other options suggest actions that are inappropriate or unsafe in the context of a green light. For example, speeding through the intersection can lead to dangerous situations, as can stopping unnecessarily or only focusing on turning left without considering other traffic. Thus, the emphasis on caution and yielding in option A makes it the appropriate interpretation of a green traffic signal for commercial vehicles.