Why do trains honk so much? Trains honk to alert people who might be on the tracks or cars about to cross the tracks to get out of the way.
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The reason for the different horn sequences are for other employees to know why the horn is being sounded, three short blasts, means the train is backing up, two long blasts means the train is going ahead. One long blast for stopped with the air brakes applied.
Under the Train Horn Rule (49 CFR Part 222, issued on August 17, 2006), locomotive engineers must begin to sound train horns at least 15 seconds, and no more than 20 seconds, in advance of all public grade crossings.
Federal Railroad Administration (FRA) rules require locomotive engineers to sound train horns between 15 and 20 seconds, but no more than a quarter-mile, in advance of all public grade crossings. Train horns must be sounded in a standardized pattern of two long, one short and one long blasts.
By 1938, the Association of American Railroads had adopted the long-long-short-long signal for rail crossings. But whatever the horn pattern, the goal is to warn people well in advance that a train is coming. In 2021, 236 people were killed at highway-rail grade crossings in the US.
At night, the air near the ground can have a different temperature than air only a few hundred feet above1. This affects the transmission of sound waves. There is usually less ambient noise after dark, so the distant train sounds louder. As pointed out elsewhere, maybe the trains don't use the horn in daytime.
Trains consume less energy and produce less harmful pollutants than either car or air travel. Hopping on an Amtrak train will save you gas and daily wear and tear on your car. It also reduces the ever-increasing traffic congestion on the roads and in the skies.
This location may be surprising, but loud music, car horns and sirens can hurt your ears, especially if you have your windows open. Even passing trains can affect your hearing with their horn reaching 145 to 175 decibels.
Earplugs: Wearing earplugs can combat the train noise and help you sleep through the night. White noise: A white noise machine or app will provide a constant low-level background noise that can help you sleep through occasional train whistles.
HOW SAFE ARE TRAINS? Trains are statistically much safer than driving. In 2020, the Bureau of Transportation Statistics recorded 40,867 total deaths from travel, including in planes, in cars on highways and on trains.