GS6 Telescopic Goalpost Height Restriction Cables Warning KitThis GS6 Height Restriction Barrier system is a lightweight, cost effective solution to ensure full GS6 compliance. This system is fully HSE GS6 compliant and is designed to be set up bridging the access road before and after the obstacle that is being avoided. Overhead goalposts are now required by law on most construction sites, where overhead obstacles are present. They are used to ensure that adequate warning is given to drivers about overhead