 This sign is used as a direct replacement for the slash-through speed derestriction signs common in Europe and elsewhere.Speed limits are enforced in all areas of the country.Tolerance ranges from 3% to 10% in most states but only 3 km/h in Victoria, an issue that has caused much controversy in that state, especially in light of the fact that earlier Australian Design Rules specified that vehicle speedometers may have up to 10% leeway in accuracy.