Since the M50 was first designed, population of the greater Dublin area has risen by 20%, with commuters now facing long delays on their journeys into the city.

With so many people dependent on private cars, is there any way of easing traffic congestion?

Brian Caulfield, Professor in Transportation at Trinity College Dublin and Aidan Farrelly, Social Democrats Spokesperson on Transport speak to The Last Word about the issue.

Hit the ‘Play’ button on this page to hear the piece.