.Subject to subsection (3) below, a highway 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 18 to this Act require compulsorily land lying beyond the limit specified in relation to that power in column 2 of that Schedule.
Part II of Schedule 18 has 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 of a highway or proposed highway, or of a maintenance compound, service area, trunk road picnic area or lorry area, or required for the purpose—
of the diversion of a navigable watercourse,
of the carrying out of works authorised by section 110 above, or
of providing protection for a highway or proposed highway against snow, flood, landslide or other hazards of nature.