How far in advance should a driver signal when changing lanes?

A driver should signal at least 30 meters before changing lanes to ensure that other road users are aware of the intention to change and can react appropriately. This distance allows sufficient time for drivers in adjacent lanes to notice the signal and adjust their speed or position if necessary. It also helps maintain safety by giving the signaling driver enough time to carry out the maneuver smoothly without causing confusion or danger to surrounding traffic. Depending on speed and traffic conditions, this 30-meter signaling distance aids in promoting safe driving habits and communication on the road.