Motorists are experiencing delays on the M50 this afternoon following an earlier collision.
The hard shoulder and the left lane of the northbound road are blocked between Junction 5 Finglas and Junction 4 Ballymun.
Emergency services attended the scene and traffic has been reduced to one lane in the area.
Gardai said they don't know the condition of the people involved in the collision but their injuries aren't believed to be serious. They added that the tweet was sent out for traffic control purposes.
It is the second traffic incident to occur on the north section of the M50 in the past 24 hours.
Yesterday evening, a male pedestrian in his late twenties was killed after he was struck by an truck.
DUBLIN: The hard shoulder and left lane of the M50 northbound are blocked between J5 Finglas and J4 Ballymun due to a collision. theAA.ie— AA Roadwatch (@aaroadwatch) January 5, 2017
Meanwhile, train services through Grand Canal Dock have been suspended after a truck hit the bridge.
Irish Rail are keeping their customers updated on their official Twitter account.