Highball Signal is a historic railroad signal located in Delmar, Delaware, United States. The signal can be described as a white sphere mounted onto a pole, located next to railroad tracks, intended to signal permission for a train to proceed at full speed; as long as the ball is at the top of the pole.
Highball Signal is a historic railroad signal located in Delmar, Delaware, United States. The signal can be described as a white sphere mounted onto a pole, located next to railroad tracks, intended to signal permission for a train to proceed at full speed; as long as the ball is at the top of the pole.
Source: Wikipedia "Highball Signal" · CC BY-SA 4.0
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