Abstract: A warning system for intersections, particularly those involving a railway crossing is provided. The present invention comprises a triggering mechanism to identify when a target train or vehicle is approaching a target intersection, software to calculate the speed of the target vehicle or train in relation to the target intersection and further comprising sound emission features to emit a desired sound, and an acoustic beam emitter to focus a warning sound in the direction of and local to only the danger zone. Also provided is a supplementary system to provide a warning to pedestrian crossing predetermined danger points.