Meh, not so good as you might think. I checked on mine and at first it worked but then it didn't, then it worked again and again it didn't and so on. Must be some lose cables or something.
It was a joke actually. In all seriousness I am actually really good with my indicators, especially as I have 2 sons who have either recently got their license or are working towards it. They are more than happy to point out even the slightest error.