PPS 13 Transportation and Land Use·Page 42
Sub-Regional Transport Plan (SRTP)
The SRTP implements the Regional Transportation Strategy for rural and other urban areas outside the Belfast Metropolitan Area, including main and local hubs and Londonderry as the regional city for the North West.
The SRTP, being prepared by DRD, will implement the RTS as it relates to rural and other urban areas i.e. for cities and towns outside the Belfast Metropolitan Area (the main and local hubs as defined in the RDS) and for rural areas. The plan will also fully recognise the urban needs of Londonderry as the regional city for the North West.
Source — /Users/richardhill/Documents/planning-arch-project/data/documents/regional/PPS 13 - Transportation and Land Use.pdf