Rules of the road

Driving laws are generally the same in each country, but there are some small yet important differences.

The laws shown on this page relate to the Republic of Ireland only.

These laws apply across Ireland
Minimum driving age Use of handheld
phones whilst driving
Use of camera
detection equipment
Drink driving limit Child restraints

17 years



50 milligrams
(20mg for new / professional drivers)

Under 150cm height
and 36kg weight

Other things to consider

The use of headlights is mandatory during heavy rainfall or poor visibility.

  The use of horns is forbidden between 11:30pm and 7:00am
  Many level crossings are manually operated - it is your responsibility to open and close the barriers.


Maximum speed limits for cars and motorcycles 
Northern Ireland (mph)