Three quarters of delegates backed a Central Council motion at Congress to introduce the change for the next three seasons.
Teams in Division Three and Four of the League will play in the new 16 team second tier, unless they reach their provincial final.
A Tipperary motion was carried to determine that Tier Two standings will be determined at the end of the League rather than at the start.
Bray Barrister Called to the Inner Bar
Neasa Bird SC was formally called to the Inner Bar at a ceremony in the Four Courts recently.
Garda Patrols To Increase in Greystones and Delgany Ahead of Hallowe'en
It follows concerns about anti-social behaviour in Dr. Ryan Park, Archers Wood and surrounding areas.
Lara Gillespie Claims Silver at UCI Track Cycling World Championships
The Enniskerry rider still plans to go for gold, having missed out on a photo finish.
Wicklow Schools, Clinics & Council Services Hit In Biggest Public Sector Strike in 15 Years
Disruption is inevitable as unions say their members don't want to impend services while the government's wait to address public sector pay row leaves the public at the mercy of withdrawn services
Katie Taylor's Remarkable Life To Be Dramatised In Theatres In HERstory
Bray Bomber To Step Onto The Stage With Two-Part Show On Her Extraordinary Life & Times In Boxing
8:00pm - 10:00pm
Love Songs on the Coast
Light rain
High: 13°C | Low: 9°C
Light rain
High: 14°C | Low: 8°C
Light rain
High: 13°C | Low: 6°C
Light rain
High: 13°C | Low: 6°C
Light rain
High: 13°C | Low: 6°C