How far should a driver signal before changing lanes on a highway?

Answer: B — 200 feet

Signaling before changing lanes is an essential safety practice that helps communicate your intentions to other drivers. In South Carolina, the recommended distance to signal before making a lane change on a highway is 200 feet. This allows ample time for other drivers to notice your signal and adjust their speed or position if necessary. It reflects the importance of being aware of your surroundings and enhancing safety by providing enough warning for those around you, thus reducing the likelihood of accidents. Maintaining this distance gives you and neighboring vehicles adequate time to react appropriately.