In what situation should you always use your turn signals?

Turn signals are a critical safety feature that help indicate your intentions to other drivers and pedestrians on the road. Using turn signals is essential whenever you are making turns, changing lanes, or merging into traffic. This practice informs surrounding vehicles of your planned actions, allowing them to react appropriately and reducing the risk of collisions.

In situations such as turning at intersections, changing lanes on the highway, or merging onto a roadway, activating your turn signal provides a clear warning to other road users. Consistent use of turn signals contributes to safer driving conditions, as it enhances communication between drivers, which is vital for maintaining orderly and predictable traffic flow.

Regarding the other choices, signaling only when other cars are present may lead to confusion and increased dangers, as it isn’t always clear when it's appropriate to signal or when other drivers are nearby. Using turn signals while driving above the speed limit does not inherently relate to the necessity of signaling your intentions. Additionally, restricting the use of turn signals to nighttime is impractical, as they are necessary at all times of day to ensure safety. Therefore, the correct answer emphasizes the consistent and proactive use of turn signals in key driving situations to promote safer driving practices.