The track warrant section is protected by automatic block signals as well.
A player may also "wiggle" or "flash" one block signal to indicate which opponent to serve to.
Ahead, the engine swallowed the bright green lights of the block signals and left a wake of red.
Later, waiting at a block signal, an attendant opened a door.
Instead, they are wired like separate block signals or Distant signals.
In non-interlocking stations, there may be a block signal instead of a starting signal.
The last block signal before the home signal is number one.
This signal is known as a No. 0 block signal.
The block signals let the engineers and train conductor know the position of the trains on the system.
A block signal can show any of the following three aspects:
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