Train horns are required by federal law to be sounded at all public crossings, 24 hours a day, to warn motorists and pedestrians that a train is approaching. A quiet zone is a stretch of track where the Federal Railroad Administration has agreed that trains are not required to routinely sound the horn at each public crossing except in emergencies, such as someone on the track or workers within 25 feet of the track or at the discretion of the crew, as appropriate.
The City is working with the Fort Worth Transportation Authority and their contractors to establish Quiet Zone crossings through North Richland Hills. As part of Quiet Zone, significant safety improvements will be made to existing crossings, including installation of medians and new railroad crossing warning signs. The Quiet Zone designation—and all the improvements that go along with it—is planned to be in place by the opening of the rail line.
At the rail stations there are certain bells and horns that the system is required to use to alert passengers of an incoming/outgoing train to/from the station. This would only be during operating hours, not in the middle of the night.