A driver's left hand extended straight out means what?

When a driver's left hand is extended straight out from the vehicle, it signals a left turn. This hand signal is a standard communication method used by drivers to indicate their intention to other road users, especially when turn signals or brake lights may not be functioning. The left arm straight out aligns with traffic laws and hand signal conventions, allowing other drivers, cyclists, and pedestrians to anticipate the driver’s action, thus improving safety on the road.