the Sounthbound SCR traffic will fill up all the space between the A4 and the box; and you can't turn right onto a box junction if the exit is blocked. The box junction is split but there is not enough room to wait in the middle without one or more tyres being on the boxes — so just HOW does this work? i know everyone has pretty much said all this, but surely there must a SOME way to do it or they wouldn't have installed it — or are they really that incompetent/ venal? i am hoping they are not and i just need it explaining to me ....