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Crossing Signals
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These signals are used at grade crossings
to warn automobiles and pedestrians of passing trains. Earlier signals use standard 8 3/8 inch
diameter lenses. More modern signals
use larger more visible 12 inch diameter lenses. Each light unit has a background and visor assembly
which is hinged at the bottom and tilts down to allow access to the lens, bulb
and mirrored reflector. This assembly
is held upright by a single bolt located on the front directly above the lens
visor. Each unit also has a small
window on each side commonly referred to as a “side light” which indicate to
the crew on an approaching train that the crossing signal system has been
activated. Light units usually are found in groups of
four - two facing forward and two facing to the rear - to enable warning of
traffic approaching in each direction. The mast holding the light units usually
has two “Railroad Crossing” cross bucks (one for each side) as well as a top
mounted crossing bell.
Above. Side of signal showing side light window and bulb. |
Above. Crossing signal with 8 3/8 inch diameter lenses and top of mast bell. Normally the cross bucks visible at the bottom would be mounted above the light units.
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