Caibidil:
John st Rose Inn st and Patrick st have very bad air quality,this is due to traffic and more fumes caused by it standing still,while there is a reason for heavy vehicles such as lorries for shop stock, buses cause most of the blockages.
I suggest making the train station a transport hub,so buses can arrive and leave in the direction of the ring-road this cuts out their use of the city streets which would improve the air and noise emission quality,
Install bus stops on the ring road close to the roundabouts ,that can be used by an electric city bus service plus the dublin cork commuter buses and all other buses