A number of Luas trams have been taken out of service after being involved in road crashes, causing delays.
Customers are being told to allow extra time to travel.
Several trams are currently being repaired and won't be back operating until next week.
"These delays are due to a number of trams being unavailable due to their recent involvement in road traffic collisions. These trams are being repaired by our maintenance teams and will not be returned to service until next week with testing being carried out to ensure they are safe and fit for service" according to a statement on luas.ie.
It means services on both the red and green line will run on average every 6 minutes instead of every 3-4 minutes during peak travel times today and tomorrow.
Transdev, the company that operates the Luas, is reminding road users never to 'amber gamble', break red lights or disobey road signs, particularly around Luas tracks.
"The safety of our passengers and staff is our primary concern. All of our teams are working to return the affected trams to service as quickly and as safely as possible. "
The firm has apologised to passengers.
