The basic speed limits apply in Ireland with urban roads at 50 km/h, regional roads at 80 km/h and national roads and highways 100 km/h. There are special speed limits around schools of 30 km/h. Driving in Ireland, it is always a good idea to make sure you check the speed traffic signs and obey the limits. It might be safer to drive slower than faster for safety reasons in wet or misty weather conditions.