What does a hand and arm extended downward signal to other drivers?

A hand and arm extended downward signals to other drivers that the vehicle is either slowing down or coming to a stop. This gesture is an established part of hand signaling for drivers and ensures that other road users are alerted to the intended action of the driver. Making this signal is particularly important in situations where brake lights may not be clearly visible, such as in heavy traffic or in a bicycle lane, allowing for better communication and increased safety on the road.

Understanding hand signals is crucial for all drivers to ensure safe cooperation in traffic, especially considering that not all vehicles are equipped with modern signal lights. This knowledge enhances awareness and adherence to road safety practices.