Abstract: There are provided improved versions of a barrier fence 218 suitable for racetracks. The fence comprises an elongate rail 219 and uprights 220 secured thereto at positions along the rail, wherein an upright is secured at an upper end to the rail and at a lower end to a ground anchor 201. The lower end of the upright is adapted to separate from its associated ground anchor in response to an impact load on the upright. The improvements include improvements to connection of the uprights to the ground anchors, avoiding undesirable motion of uprights after impacts, rail length joining arrangements, erection and handling methods, and the provision of permanent footings.

Abstract: A barrier fence for horse racing courses and the like having a rail assembly, uprights and ground anchors for the uprights' lower ends. Fence can resiliently deflect under side loads applied to the rail assembly, but in the event of an excessive value of such load, or of an impact load applied directly to an upright, that upright can break away from its ground anchor at its lower end. Multiple breakaway mechanisms can be provided. Upper ends of the uprights are secured to the rail assembly and in the event of an upright breaking away at its lower end it can rotate about a horizontal axis.