When changing lanes on a multilane highway, when should you signal?

Signaling at least 100 feet before changing lanes on a multilane highway is essential for ensuring safety and awareness among drivers. This practice allows enough time for other drivers to recognize your intention to change lanes and react accordingly. It helps maintain smooth traffic flow and minimizes the risk of accidents, as drivers behind you or in adjacent lanes can adjust their speed or position in response to your signal.

This early signal also serves as a courtesy to fellow motorists, informing them of your intentions well in advance. Such early signaling is particularly important on high-speed roadways where reactions need to be swift, enabling everyone on the road to operate with a clear understanding of each other's movements. It supports defensive driving and promotes a proactive approach to roadway safety.