List
I find photo evidence in the following books
Mike Spoor's "CB&Q in Color"
Vol. 1 P. 82 Galesburg two track
P. 100 West Quincy( not listed on track charts)
Vol. 2 P. 18 the 16th st curve in Chicago (before area covered by track
charts)
Vol. 3 P. 42 West Quincy again
P. 70 Market St. Ottumwa Tee shaped to support the offset weight?
P. 89 Pacific Jct with a copy of the track chart showing "Cant.
Sig. Br.
"Burlington Route Pictorials" by Alfred Holck
Vol. 1 P. 70 and 74 Red Oak two track with eastbound signals
P. 75 the tee shaped bridge in Ottumwa
P. 80 the bridge at Council Bluff
The idea is to put up a signal where there is not clearance for a full
bridge. But the signal must be on the right hand side of the track so the
Engineer knows it is his signal. Modern practice is to just put up a signal
and give its notation in a bulletin and or special instruction and let the
engineer figure where the signal is at. Often they are changed and the
engineers have to figure them out if they haven't been over the area lately.
sjh
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