What situation may necessitate a lane change?

Changing lanes to pass slower-moving vehicles is essential for maintaining the flow of traffic and ensuring safety on the road. When you encounter a vehicle that is traveling significantly slower than the speed limit or the vehicles around it, making a lane change allows you to move ahead more efficiently and avoid creating potential hazards such as rear-end collisions.

In this scenario, passing slower-moving vehicles might also be necessary to keep traffic flowing smoothly behind you. It’s critical to perform this maneuver safely by checking for blind spots, using turn signals, and ensuring that the lane is clear before changing.

The other scenarios listed, such as turning left at a red light or stopping for a pedestrian, do not typically involve changing lanes. Responding to a traffic light usually involves positioning the vehicle correctly within the lane rather than changing lanes. Therefore, lane changes are specifically justified when overtaking slower traffic to enhance driving efficiency and safety.