Residents may also wonder why conductors are required to blow horns when there are already automatic warning signals at the intersection. Law requires engineers to blow the horn as it approaches and goes through the intersection, according to TxDOT.
However, there are potential restrictions or loopholes. Certain communities may apply for quiet zones if Federal Railroad Administration requirements are met, and therefore trains will not be able to sound their horns when passing through the zone, according to TxDOT.
Some cities may also use wayside horns, which are mounted on the signal at an intersection and would be directed at traffic in the street and potentially less disruptive, according to TxDOT.