Your vehicle must have a horn which can be heard from a distance of __________ feet.

The requirement for a vehicle's horn to be audible from a distance of 200 feet is established to ensure safety on the road. This distance allows the horn to serve its purpose effectively, warning other drivers and pedestrians of potential dangers or maneuverings of your vehicle. A horn that can be heard from this distance helps to enhance visibility and awareness, which is critical in avoiding accidents.

While the other distances listed may be reasonable for different situations, the specification of 200 feet balances the need for a horn to be effective without being excessively loud, which could lead to unnecessary noise pollution or startling other drivers. This standard is designed to ensure that the horn remains a practical tool for communication between road users.