Gardai, the National Roads Authority and the Health and Safety Authority have launched separate investigations into an accident in the Dublin Port Tunnel last Friday, which resulted in both bores of the tunnel being closed.
The tunnel was evacuated after two heavy goods vehicles (HGVs) collided in the northbound bore shortly before midday
The evacuation was complicated by a second emergency, in which a motorist complained of chest pains. Some 40 motorists were stuck in the tunnel for up to two hours.
The HGV ban in Dublin city centre was lifted during the closure, which lasted until shortly before 4pm.
