Engineers traditionally sound two long blasts, one short blast and one long blast as they approach crossings.

To address the hazard, Congress passed legislation in 1994 mandating that trains toot their horns as they approach crossings.

The intermodal hub is also located within the Quiet Zone, so all trains (including Amtrak's) do not routinely sound their horns when approaching public crossings within this corridor.

It is located within the Quiet Zone, so trains do not routinely sound their horns when approaching public crossings within this corridor.

The FRA requires all trains operating on heavy rail lines to sound their horns for at least 15 seconds at a minimum level of 96 decibels (from 100 feet) as they approach crossings.