Iowa Drivers Permit Practice Test

Using turn signals when changing lanes or making turns is a fundamental aspect of safe driving. Signaling is essential as it communicates your intentions to other drivers and pedestrians, helping to minimize confusion and prevent accidents. When you plan to change lanes or turn, activating your turn signal alerts others of your upcoming maneuver, allowing them to react appropriately. While it may seem that signaling would be necessary at all times, there are specific instances where it is legally and practically required, primarily during lane changes and turns. Night driving and construction zones may require increased caution, but they do not change the basic rule about when to signal. Thus, option B correctly identifies the key moments when turn signals should be used in order to ensure safety and compliance with traffic laws.