Why is signaling important when driving a large vehicle?

Signaling is crucial when driving a large vehicle because it serves as a means of communication between the driver and other road users. Large vehicles, such as trucks, have significant blind spots and require more time and space to maneuver. By using turn signals, the driver can indicate their intentions to change lanes, make turns, or stop, which helps to prevent accidents and ensures smoother traffic flow. This clear communication allows other drivers and pedestrians to anticipate the actions of the large vehicle, enhancing overall road safety.

Without proper signaling, other drivers may not be aware of the truck driver's intended moves, potentially leading to dangerous situations. In contrast, the incorrect options suggest confusion, optional signaling, or unrelated factors such as fuel economy, which do not support the fundamental purpose of signaling in promoting safe driving practices.