Willis Lamm's
|
OLD TIMEY RAILROAD PREEMPTS |
Single signal heads with red or amber incandescent "RXR" lettered roundel lenses were also used at highway intersections that included rail traffic. The "intersection" in the collection uses a reproduction lens in a standard signal section.
The advent of computerized train and traffic controls have done away with all red flash at most intersections. Modern controllers can "calculate" the speed of an approaching train and provide green displays for vehicles in the train's direction of travel while displaying red indications to all other approaches. |
View the old timey railroad preempt on YouTube.
This "intersection" is part of a five intersection coordinated system. When the preempted signal is released, it returns to arterial green to clear arterial traffic. The cross street will then be given minimum green times until the signal falls back into sequence with the other signals in the system. |
More displays will be presented as signals are restored and controllers are assembled.
|