So I live next to a junior school, end of the day is 3.15pm. All well and good, I'm a teacher so never at home normally for the parking chaos outside, one of the reasons why we didn't care. They don't block us in or anything and we have a white bar line across our drive on the road to avoid that anyway. However I'm only working part time at the moment as I am ill, and discovered today Mum's parked outside when I got home at 2.40pm, ok, fair enough if you went to waste your life away by the side of the road, but they had their cars running. AIBU to think that they should be turning off their engines if they are parked up?