One of these supplemental safety measures is the implementation of a four-quadrant gate crossing. This prevents access to the crossing from both sides of the track, in all lanes. When four quadrant gates are used, the entrance gates descend upon activation of the crossing by a train, thus preventing any further travel into the crossing island. Subsequently, the exit gates are driven down only when a vehicle detection system can confirm that no vehicles remain on the crossing island where they could be trapped when all four gates are lowered.
Today, Island Radar offers an FRA-approved vehicle detection system with redundant broad-zone protection specifically for four-quadrant gate locations. Installed non-intrusively in the track wayside, the Island Radar system provides a level of detection and crossing safety that is not feasible with other forms of detection. When configured with the gate controllers, the Island Radar system confirms safe clearance of the crossing island, allowing the exit gates to remain in a safe down position without trapping a vehicle on the island.
Island Radar is the detection of choice for Florida’s high-speed rail corridor, and the company’s systems have been installed on numerous crossing safety projects in North America with class I and transit railroads. The Island Radar vehicle detection system is proving to be the smarter, safer, more reliable choice for vehicle detection.