Updated 13.10
For commuters in the Dublin area, there's a warning today that DARTs will be extra-short because of a dispute between the company and drivers.
Irish Rail has issued a statement apologising for the inconvenience, but advising passengers that most DARTs today will operate as a 4-carriage train, and a small number will operate as a 2-carriage train.
DARTs normally operate with a mix of 8-carriage, 6-carriage and 4-carriage trains.
The company has blamed 'a refusal by drivers to carry out a coupler check' before DART trains leave depots.
This check verifies that an electrical connection is complete through the train when multiple DART units are connected together. It has been necessitated by a number of incidents in which drivers received false indications on door interlocking.
The check was introduced last month and is expected to be in place only temporarily, while a modification is carried out on the fleet.
Irish Rail spokesperson Barry Kenny say it's regrettable: The DART chaos could be over by today, according to SIPTU.
The union says it's making every effort to end the row between drivers and Irish Rail.
A refual to inspect them led to major delays and overcrowding this morning, but SIPTU's Paul Cullen says it was necessary to raise the issue:
