Current ATC procedures cannot satisfy airport demand for airline services, While the FAA OEP [Operational Evolution Partnership] and 'collaborative decision-making' along with RNAV and RNP [Required Navigation Performance] will reduce inflight delays, none of these address or reduce the present and future airport capacity restrictions.  

Building new airports is greatly limited by ecology, noise, availability of land, costs running into multi-billions of dollars and many years before completion. Best solutions rest on using what we have!

• Split long runways into two halves, one for takeoff and one for landing for certain aircraft.
• Build between these two halves a 1000 feet wide taxi crossing for the use of outside runway aircraft.  
• Go vertical to avoid vortex of preceeding aircraft by using VSA and VST technologies.
• One hundred meters, about 300 feet is a safe vertical separation vertical distance.
• Apply continous descent approaches for arrivals, CDA.
• Develop jet climb corridors JCC for departing flights. 
• Install ADS-B on a faster implementation cycle than currently planned.

Have high density airports install ADS-B ground equipment and have airlines dedicate aircraft to those specific airports on a continous use basis. Through these means, the expense of installing ADS-B on a few airliners can be greatly reduce the installation of this ADS-B in flight equipment, yet it will maximize the benefit in fuel savings for the airlines and adding additional sequences for the airports.

BIG NEWS up date of July 15, 2008: The Federal Aviation Administration announced today the installation of traffic lights [runway-light system]  at 22 large airports over the next three years. This issue, the need to have these crossing light,s was sent to the FAA, LAX airport by the director of this company at least four years ago. Well done FAA but the three year period should be three months and cover all airports.

• Safe-Runway using the split runway methodology allows airliners to depart as soon as they are de-iced during winter operations. This not only saves money but also assures safety of flight. 

FAA and Euro-control should move toward Air Traffic Monitoring Service, [ATMS] wherein 'free-flying' aircraft self separate and ATMS provides flight following and monitors separation through ADS-B.