A very common error is to believe the accuracy ratings of a given map's geocodable attributes. Such accuracy as quoted by vendors has no bearing on an address being attributed to the correct segment or to the correct side of the segment, nor resulting in an accurate position along that correct segment. With the geocoding process used for U.S. Census TIGER datasets, 5–7.5% of the addresses may be allocated to a different census tract, while a study of Australia's TIGER-like system found that 50% of the geocoded points were mapped to the wrong property parcel.