What is a primary reason for using turn signals?

Using turn signals is primarily about communicating your intentions to other drivers on the road. When you signal before making a turn or changing lanes, you provide crucial information to those around you, helping to prevent misunderstandings and potential collisions. This act of signaling promotes safety by ensuring that other drivers are aware of your actions, allowing them to adjust their driving accordingly.

While turn signals may also have implications for compliance with traffic laws and can be useful for alerting pedestrians, the core function is focused on the communication aspect between drivers. The other options do not capture the intent behind using turn signals as effectively. For instance, saving battery power is irrelevant in this context, and while alerting pedestrians is important, it does not encompass the primary reason for their use on the roadway among vehicles.