On my commute to work, I often run into a very sudden traffic slow-down. It's general practice round here to slow down carefully, checking rear mirrors and to put your hazard lights on as you're doing so. My hazards on my ID3 are not a proper button (it is a 'touchbutton'). It is awful, I can't find it by feel, but I want to keep my eyes on the road in these kind of situations.