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signal n vs; signalling n vs; signaling n vs; traffic light n; traffic signal n | |||
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signal; semaphore | |||
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alternate mark inversion signal; AMI signal; bipolar signal | |||
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Y-C signal | |||
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Q signal | |||
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D'B signal | |||
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V signal | |||
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CB signal | |||
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Y signal | |||
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I signal | |||
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D'R signal | |||
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U signal | |||
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CR signal |