Roadsafe 4wd 3m Sand Flag - Simpson Desert CompliantRoadsafe 4WD Sand Safety Flags give drivers a greater chance of seeing approaching vehicles and minimise the risk of accidents when cresting dunes. That is why there is now a Simpson Desert requirement to attach a sand flag when crossing the Simo. The Sand Flag is supplied in three 1m long pole pieces, that screw together to give the height required. Depending on where you mount it on the vehicle, you have the option of 1, 2 or 3 pieces to get you to