The Green Luas line is stopping early tonight to allow essential works to take place.
This maintenance was unplanned and will cause major disruptions across the weekend.
Passengers are being advised to take note of the new running times with Luas apologising for the inconvenience caused.
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The line will finish one hour earlier tonight, with the last tram leaving Broombridge Southbound at 11:16pm.
The last tram from Brides Glen Northbound will leave at 11pm.
Tomorrow morning, the trams will start three hours later than normal.
The first tram from Broombridge Southbound will leave at 9:31am with the trams from Brides Glen Northbound starting at 10:00am.
Luas tickets will be valid on Dublin Bus while services are disrupted tomorrow. The last tram times will not be affected tomorrow evening.
Luas said: "Green Line services will run as normal from Mon 16th May.
"Red Line Operating Hours are not affected.
"We thank Luas customers for your patience and cooperation during these essential engineering works."
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