Trams are testing out the new Luas Cross City route in Dublin city centre.

Following four years of construction, trams got underway at 7 o'clock this morning at slow speeds from 5 to 10 kilometres.

Luas maiden voyage on O'Connell Bridge #crosscity #tramtesting pic.twitter.com/zf2glrf2fp

— Gail Conway (@Gailiana) June 17, 2017

The new line connects the north district to the south and is expected to carry an additional 10 million passengers a year once up and running from December.

Dublin Town CEO Richard Guiney says footfall continues to rise in the city and the infrastructure needs to meet demand: