> On RR's that favored the cantilever design one could find these structures
> on single track or multiple tracks. As for roads that adopted other types
>of signal supporting structures a cantilever might be installed at
locations
>that required the display of a signal over a track which was not the
>"outside" track or in areas of heavy congestion that precluded the use of
>a support member on both sides of the track.
If this has been brought up, dummy masts should be mentioned - as dummy
masts have been installed on even single mast high signals to cover "inside
tracks", rather than the expense of bracket masts or cantilevers. It makes
me wonder when cantilevers came in to wide use, as it seems that I have seen
significantly older bracket masts and dummy masts than cantilever types.
Gabe
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