We're examining the details of the Dublin Transport Plan to examine its aim and how it will achieve that, as well as the overall reaction. We're joined by Brian Caulfield, transportation professor and Head of the Department of Civil, Structural and Environmental Engineering at Trinity College Dublin, to see what the impacts could be.The Explainer is brought to you by The Journal. Providing open access to valuable journalism in Ireland has been the aim of The Journal for a decade. You can contribute to ensure we can keep questioning, investigating, debunking, explaining and informing at www.thejournal.ie/contribute/