What is the purpose of a railroad sign or signal?

The primary purpose of a railroad sign or signal is to notify traffic of approaching railroad tracks or trains. These signs and signals are crucial for ensuring the safety of both motorists and pedestrians by alerting them to the presence of a railroad crossing. They inform drivers about the need to slow down and be cautious, as trains can approach quickly and may not be easily visible until they are very close.

Railroad signals often include flashing lights, gates, or signs that indicate whether it is safe to proceed. This information is vital as it helps to prevent accidents by providing clear warnings that a train may be on the way. The main goal of these signs is to reduce the risk of collisions at railroad crossings, which can be catastrophic.

While directing traffic at intersections, providing information about speed limits, and marking pedestrian crossings are all important functions of various road signs and signals, they do not directly relate to the specific role of railroad signs or signals.