On the right, the red and white hazard plates fitted to Arrow’s racks, serve not only as a visible width warning but also as an extra safety measure during severe breaking or an accident. Coupled with our extra glass safety stop (below) they will, in the event of an accident, stop the glass from sliding forward past the drivers door. A somewhat important measure if your operative is driving in warm weather with his arm out of the window. Our competitor’s hazard plates on the left would not be capable of stopping anything.