PPS 12 Housing in Settlements·Page 38·HS 3
HS 3 Transit Site Location - Green Belt Exception
Where a transit site cannot be accommodated within a settlement, sites adjoining or in close proximity to settlements and even exceptional Green Belt release may be considered, with full environmental assessment.
Where a need is identified for a transit site and this cannot be accommodated within a settlement, a site adjoining, or in close proximity to a settlement; other areas subject to policies of restraint, such as the Green Belt, should be considered. The exceptional release of land for such a facility should take full account of environmental considerations.
Source — /Users/richardhill/Documents/planning-arch-project/data/documents/regional/PPS 12 - Housing in Settlements.pdf