Subject to subsection (3) below, a roads authority shall not, in the exercise of a power to acquire land under any of the provisions of this Act specified in column 1 of Part I of Schedule 5 to this Act, acquire compulsorily land lying beyond the limit specified in relation to that power in column 2 of that Part of that Schedule.

Part II of that Schedule shall have effect with respect to limits specified in Part I of that Schedule.

Nothing in this section applies to land required for purposes connected with the drainage or protection of a public road.

In subsection (3) above and in Schedule 5 to this Act, references to a road and to a public road shall be construed, respectively, as including references to a proposed road and to a proposed public road.