nomenclature question (NW Mailing List)
NW Mailing List
nw-mailing-list at nwhs.org
Sat Apr 15 12:06:28 EDT 2017
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
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