When changing lanes on a multi-lane highway, what is required by law?

When changing lanes on a multi-lane highway, signaling your intentions is a requirement by law. This action is crucial for ensuring the safety of all road users. Signaling alerts other drivers to your movement, allowing them to react appropriately and maintain safe distances. It fosters a clear understanding of your actions on the road, reducing the likelihood of accidents caused by sudden lane changes or unanticipated movements.

Proper signaling is not just a courteous practice; it is a fundamental aspect of defensive driving. Regardless of whether other vehicles are present or traffic is heavy, making your intentions clear through your turn signals is essential for maintaining an organized and predictable flow of traffic. This law underscores the importance of communication among drivers in promoting road safety.