What is the minimum distance a motor vehicle's horn must be audible under normal conditions?

The correct answer, which is 200 feet, reflects the standard requirement for a motor vehicle's horn to be audible under normal conditions. This distance is established to ensure that the horn can effectively alert other drivers, pedestrians, or cyclists to the presence of the vehicle, thereby enhancing safety on the road. A horn that is audible at this distance provides a sufficient warning signal in various driving environments, allowing other road users to take appropriate action to avoid potential collisions or dangerous situations.

The choice of 200 feet as the minimum distance is based on commonly accepted traffic safety regulations, emphasizing the importance of clear communication between road users. This typical measure allows for ample time for reaction among those who may be affected by the vehicle's presence.