I have to add my experiences with the timing card at RDU. I have been selected three times to carry the card through and it was after I had the ID checked and when the line was very short. I have not seen anyone handing out cards at the peak periods when you may have 10-15 minutes just to get to the ID checker and then another 10-15 minutes to get to the detector.

I always thought that this is a great way to cook the books because the total time spent in line for all my three trips was probably about 10 minutes.