What is the main benefit of signaling before changing lanes?

The primary benefit of signaling before changing lanes is to inform other drivers of your intentions. When a driver activates their turn signal, it communicates to others on the road that a lane change is about to occur. This advance notice allows surrounding vehicles to adjust their speed or position accordingly to maintain safety and prevent potential accidents. Signaling is an essential part of road communication, fostering awareness and cooperation among all drivers, which enhances overall road safety.

While keeping track of other vehicles and maintaining speed are important aspects of safe driving, they do not directly relate to the purpose of signaling. Additionally, although complying with state laws is a valid consideration, signaling is fundamentally about ensuring mutual awareness and facilitating smoother traffic flow.