When should a rider use a lane change signal?

Answer: C — Prior to changing lanes to alert other road users

Using a lane change signal prior to changing lanes is essential for safe riding and effective communication with other road users. Signaling before making a lane change allows other drivers, motorcyclists, and cyclists to anticipate your movements, reducing the risk of accidents. It serves as a visual cue indicating your intention, which is critical for maintaining safety on the road. This practice promotes awareness among all users of the roadway, enhancing the overall flow of traffic and minimizing the chances of collisions. In contrast, signaling after changing lanes, entering an intersection, or only in the presence of law enforcement does not provide the necessary information to others ahead of time. It can lead to confusion and potential hazards, highlighting the importance of proactive signaling as part of responsible riding behavior.