Thanks for that TOPO. I appreciate the daily input from the OTBD ATCOs, especially in the evening rush, but why the long seperation between aircraft. Could it be that pilots are erratic in their speed management or is it the fact that taxi speed is reached long before the runway turnoff (autobrake!) and runway occupancy is too long? Personally I would like to see speed controlled by ATC from first contact to the final fix al la LHR and other very efficient airports. This is probably theoretical as runway efficiency is useless if there is nowhere to park it on arrival! Keep up the good work.