Gardaí in Dublin are dealing with two multi-vehicle crashes on the northside and the southside of the city.
The first is inbound on the N11/Cabinteely Bypass just before the Clonkeen Road Junction (Cornelscourt Shopping Centre).
Both the right inbound-lane and the right turning lane for Deansgrange are blocked, and traffic is slow on approach.
A second serious multi-vehicle crash on the M1 southbound is blocking the right lane before Junction 2 Dublin Airport.
It is causing delays from before Junction 4 Donabate.
Gardaí are advising motorists to avoid the route.