On Tue, 4 Oct 2005 13:06:27 -0700, Jim Richardson wrote:

Primarily two things, alerting pre-evac and at grade crossing alerts that a
high speed locomotive is approaching.


they'd be better off with bells and lights at the crossing for the
latter...

Many crossings have none.

We all (outside the screwed zone) saw the blizzard of useless
"messages" the government(s) issued during and after Katrina.

And a blizzard of useful ones as well.


wheat from chaff?

Yep, that's the strategy for now.
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