charterguy ..... you are so right ..... take off clearance is granted by ATC from an agreed position on a specified runway ...... if signage at this position cannot confirm to the crew that they are in the agreed position for take off then it should be abandoned (close the Bxxxxxy airport if necessary) ...... after reading the various posts on this subject yesterday I went down to our local airport at lunchtime and watched a whole bunch of 330's and a MD11 take off for the U.S. ...... the thought of any of these guys rolling on the wrong runway and perhaps in the wrong direction just makes me feel ill!!!