New South Wales Consolidated Acts(cf model provisions, s 74)
(1) This section applies to a dimension requirement imposed by reference to the overall height of a vehicle or combination with or without a load.
(2) Substantial risk breach The lower limit for a substantial risk breach of a dimension requirement to which this section applies is 150 millimetres over the maximum permissible dimension limit.
(3) Severe risk breach The lower limit for a severe risk breach of a dimension requirement to which this section applies is 300 millimetres over the maximum permissible dimension limit.