What does the term “railroad quiet zone” mean?

The term “railroad quiet zone” refers to specific areas where trains are not required to sound their horns at all times, but only when necessary for safety purposes. This concept is implemented to reduce noise pollution in residential and commercial areas near railroad tracks, creating a more peaceful environment for those living nearby. In a quiet zone, engineers may still sound their horns when they believe there is a safety risk, such as when pedestrians or vehicles are on the tracks, but the default is not to sound the horn at every intersection.

This approach balances the need for safety with the desire for a quieter living environment, which is why the option regarding limited horn use for safety is the correct interpretation of what a railroad quiet zone entails.