UPDATE 8:30AM
Irish Rail and Dublin Bus are warning there's going to be extensive disruption to their services today as a result of the Bus Éireann dispute.
Picketing means no services can be guaranteed on Dublin Commuter trains.
All DARTs are cancelled except the 7am Malahide to Bray service.
There are also cancellations on many Intercity rail routes and Dublin Bus routes around the capital.
Workers are demonstrating solidarity with their Bus Éireann colleagues whose all-out strike over cuts has entered its eight day.
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Thousands of Irish rail passengers are facing travel disruption this morning.
Iarnrod Eireann says a massive number of services have been cancelled as a result of secondary picketing by striking bus drivers.
The Bus Eireann row is now entering its 8th day with no sign of a resolution.
Irish Rail says it can't guarantee any services across DART and Dublin Commuter trains.
There are also cancellations expected on Intercity routes.
Update: Major Disruption to services due to Bus Éireann dispute, please see service details here https://t.co/rukH7fiLOU
— Iarnród Éireann (@IrishRail) March 31, 2017
We wish to advise customers that due to Bus Eireann pickets at depots there will be serious disruption to Dublin Bus services this morning.
— Dublin Bus (@dublinbusnews) March 31, 2017
UPDATES TO FOLLOW..