nomenclature question (NW Mailing List)

[NW Mailing List]

Bob, it's called an OWL for one-way-low speed crossing.  And you basically have the concept right.
John Marbury Sent via the Samsung Galaxy S7, an AT&T 4G LTE smartphone
null
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://pairlist6.pair.net/pipermail/nw-mailing-list/attachments/20170415/0080981a/attachment.html>