According to output control signals and feedback input test signal, the traffic signal controller can realize self-diagnosable function.
信号控制机能根据输出控制信号与反馈输入检测信号，实现信号控制机的自诊断功能。
According to output control signals and feedback input test signal, the traffic signal controller can realize self-diagnosable function.
信号控制机能根据输出控制信号与反馈输入检测信号，实现信号控制机的自诊断功能。
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