What is the minimum requirement regarding the horn's operation during an inspection?

The minimum requirement regarding the horn's operation during a vehicle inspection is that it should be audible from 200 feet. This standard ensures that the horn is sufficiently loud to alert other drivers, pedestrians, and potential hazards while also being considerate of noise levels within the environment. An audible horn is a critical component of a vehicle's safety features, serving as a warning signal in various driving situations.

When determining the adequacy of a vehicle's horn during an inspection, factors include its clarity and volume. A horn that meets the requirement of being heard from a distance of 200 feet fulfills the necessary level of sound that is typically expected from vehicle horns, promoting safety without exceeding acceptable noise levels.

The other options reference various standards that are not aligned with this requirement. For instance, the distance of 300 feet may be excessive for practical purposes, and considerations like not interfering with sound systems or being loud enough to scare animals do not pertain to the functional safety and regulatory requirements for vehicle horns in Hawaii.