Well of course, you have to be careful at the cliffs as the sign states. That really goes without saying.
Another thing to be a little careful of in County Clare are some of the roads in the Burren region. Some are very winding and narrow and on both sides there are stone walls,so there is no shoulder. Being it was our first day and we weren't used to driving on the left, it was a tad stressful ,but we survived. The good thing about all this is that at the end of the day, we were used to it and when we drove on similiar type roads on the Dingle Peninsula the next day, it really did not seem that bad.