At what point should a driver signal when approaching their exit in a roundabout?

Answer: D — As they approach their exit

A driver should signal as they approach their exit in a roundabout to clearly communicate their intentions to other road users. This practice is essential to ensure safety and maintain smooth traffic flow. By signaling at this point, the driver lets other vehicles and pedestrians know they plan to exit the roundabout, reducing the likelihood of confusion or unexpected maneuvers. Signaling beforehand helps prepare others for the driver's actions, allowing them to adjust their own behavior accordingly, such as yielding or making space for the exiting vehicle. This is especially important in a roundabout setting, where vehicles are typically moving in a circular manner and awareness of each other's intentions is crucial for safety. Other moments, like while entering the roundabout or halfway around, do not serve the purpose of informing others of an intent to exit, which is why those choices are not ideal. They may create uncertainty among other drivers within the roundabout, potentially leading to unsafe situations.