Where in the definition
"motor vehicle" there is used an expression that is not itself defined in
schedule 2 and to which a meaning is assigned by the
Transport Operations (Road Use Management) Act 1995 , that expression has the
meaning assigned to it by that Act; but if by a regulation made under this Act
a meaning is assigned to such an expression either generally or for a
particular purpose the expression shall, for the purposes of the regulations,
have the meaning so assigned by the regulation.