People who exceed the limit will get 3 penalty points.
Motorists are being advised about a new speed camera which will come into operation next week.
A 'Motorway Average Speed Safety Camera' will be in place in Co. Tipperary.
The camera monitor the average speed of a vehicle between two points, with an €80 fine and 3 penalty points for those exceeding the limit.
Although there's been a similar camera in place in the Dublin Port Tunnel, it's the first time one will be deployed on an Irish motorway.
Motoring and Transport Commentator Conor Faughnan isn't sure it will work:
The Death Toll In Gaza Has Reached 52 Thousand According To Hamas-Run Health Ministry
Hospital Consultants Are Raising Concern As Plans To Roster Them Over Weekends Ramp-Up
A Miniature Dachshund Has Been Rescued After Surviving 529 Days In The Wild Australia Bush
Police In Vancouver Continue To Deal With Mass Casualty Incident That Occured At A Filipino Street Festival Last Night
A Mass In St Peter's Square This Morning Has Marked The Start Of Nine Days Of Mourning For Pope Francis
A Man Has Been Convicted Of The Murder Of Shane Knott At A Home In Eustace Demesne In Naas Last Year
Two People, Including An 18-Year-Old Girl And A Woman In Her 50s, Have Died In Separate Collisions
Heartbreak For Irish Craft As Silversmith's "Lifetime" Of Work Stolen From His Studio
