I'm still here so I usually manage to position myself OK - and yes on a daily basis I tell my youngest about lorries since we usually encounter them on the school run. If I'm behind a lorry I if stationary I usually like to sit on the right hand side so that the driver's mirror is visible. But if a lorry overtakes you on approaching the lights you don't have much option to put another car between you. (Lots of lorries on my routes unfortunately apart from at the weekend, and that's why my 11 son doesn't cycle to school on his own. I'm quite happy to hold up traffic rather than risk going behind a lorry that looks as though it might reverse into the same junction as I'm going).