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National Flagger Course Exam A+ Questions with verified correct detailed Answers latest update 2025 The distance between the flagging station and the work space should never be less than ____ away. --- correct precise answers ---50 ft Warning signs and channelizing devices may be omited where the work space is behind a barrier, more than 2ft behind the curb, or 15ft from the edge of any roadway --- correct precise answers ---2ft - 15ft rule Duration of work for flagging, this is the typ...