What are "grade crossing signals"?

Grade crossing signals are specifically designed to alert both drivers and pedestrians when a train is approaching a railroad crossing. These signals typically include flashing lights, bells, and sometimes gates that lower to block the roadway, ensuring that individuals are informed of the presence of a train and can safely navigate the area. Their primary function is to enhance safety at intersections where railroads intersect with roads, thereby preventing accidents and ensuring that all persons are aware of potential hazards.

Understanding this function highlights the importance of situational awareness for all individuals near train tracks, particularly at crossings, where the risk of collision increases without proper signaling. In contrast, other options focus on different aspects of railway operations, such as train speed regulation, track condition indicators, or the visibility of trains, which do not relate to the specific purpose of grade crossing signals.