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The Ultimate Railroad Track & Operations Quiz
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In signaling, how does a train's wheelset typically activate a track circuit?
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Hint
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⚖️
50-50
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Audience
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A
By physically depressing a mechanical lever on the rail
B
By breaking an optical light beam
C
By shunting (short-circuiting) the electrical current between the two rails
D
By emitting a radio frequency signal
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