On Thu, 13 Sep 2007 14:26:38 +0000, John Kulp wrote:

Have heard of them and even use them at times. Unless you are IFR,
they are NOT needed at a vast majority of airports in the United States.
Most airports in the U.S. do not have a control tower, and many of those
who do do not have a 24 hour control tower. No local or ground
controllers. No ground control.

These aren't the airports that have much traffic or are the problem.
Those are major airports, which do have ATC.

That's rather the point. This idea of congestion is an airport issue,
and it is limited to those airports where GA has little-to-no presence.
There are a few possible exceptions to this (ie. TEB), but it's also
worth remembering that TEB exists as a reliever precisely because of the
congestion at EWR etc.

- Andrew