The 'default' limit has now reduced from 80 kilometres an hour to 60 kilometres an hour.
The changes came into effect at midnight last night in an effort to reduce collisions and road fatalities.
Slower speeds are also due to be brought in for built-up areas as well as on national roads later this this year.
People travelling in rural areas from today will see the changes in those speed limits on road signs nationwide.
Arklow Chef Wins Gold Medal Catering Award Plating Up Wicklow
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The blaze is said to have happened at 3.30pm this afternoon.
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Blessington Gardaí Renew Appeal Over Murder Of Paul 'Frank' Byrne
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Wicklow-Wexford TD Addresses EU Ambassadors on Artificial Intelligence
The growing impact of Artificial Intelligence is in the spotlight.
Heavy Rain
High: 20°C | Low: 12°C
Heavy Rain
High: 20°C | Low: 12°C
Heavy Rain
High: 20°C | Low: 11°C
Heavy Rain
High: 19°C | Low: 10°C
Heavy Rain
High: 20°C | Low: 11°C
