How should a driver signal their intention to change direction?

To signal a driver's intention to change direction, using hand and arm signals or vehicle signal lights is the best practice. This method effectively communicates the driver's intentions to other road users, enhancing overall safety. It provides a clear indication of upcoming actions, such as turning or lane changes, and allows other drivers and pedestrians to react accordingly.

Using the horn, flashing headlights, or weaving in the lane do not provide a clear or standardized means of communication about changes in direction. Relying solely on these methods could lead to confusion or misinterpretation of the driver's actions, potentially resulting in accidents. Therefore, utilizing hand signals or turn signals is essential for maintaining safety and clarity on the road.