Four people have been brought to hospital following a collision on the M50 northbound near the Blanchardstown exit.
One person was taken to the Mater Hospital and three others were brought to Connolly Hospital in Blanchardstown.
At around the same time, a second road accident occured on the M50 southbound.
Motorists are advised to drive with care as heavy rain and a lot of surface water is adding to dangerous conditions.
