Sennadog,. .. .Itīs always the pilotīs responsibility to make the decision whether ATC have told you itīs safe to do so or not. Itīs your arse on the line remember.... .. .As for AFIS units, well, when you call "Ready for departure" theyīll say something like "Take-off at your discretion, one PA28 late downwind" and that will tell you to have a look for him and if heīs far enough away for you to execute the takeoff, you can go for it. Theyīre not telling you itīs safe to go, just informing you of what they know so you can make an informed decision as to whether you want to go or wait for the other bloke to land. See what I mean?. .. .Iīm not an instructor so Iīve gone about explaining it very poorly but thereīs a rule out there somewhere!. .. .Hope that is as clear as mud.