The project will: 

• Facilitate the future increase in capacity and frequency of trains through the following:
  • provision of train stabling and turnback facility at Bray Station,
  • track modifications south of Bray Station to facilitate the increase in service between Bray and Greystones,
  • closure of level crossings to remove road traffic / rail constraints at the following locations;
    • Lansdowne to Merrion Gates – Lansdowne Road, Serpentine Avenue, Sandymount Avenue, Sydney Parade and Merrion Gates;
    • Bray;
    • Ennis Lane.
• Support growing communities, businesses, and future development by providing high-quality integrated public transport services in line with Government policy including the National Planning Framework and Climate Action Plan. 

Delivery of the DART+ Coastal South Project will support existing and developing communities along the railway and support future sustainable development in the surrounding region. The project will serve all existing stations along the railway corridor between Dublin City Centre and Greystones. The frequency and quality of service will provide a viable transport alternative to communities along the route and help encourage people to migrate from private car use. This will assist Ireland in reducing greenhouse gas emissions from transport and help combat climate change.  

The extent of infrastructural interventions on the Southern Line will, in so far as possible, remain within the existing railway corridor. However, studies are ongoing to determine the need for certain infrastructural interventions, which may require additional land take e.g., level crossing relief infrastructure and construction compounds.