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Closure at Side of Intersection <br /> 1. For low traffic volumes and intersecting two-lane streets, or flagger positioned In the center of <br /> the Intersection may suffice. <br /> 2. For high traffic volumes or when a four-lane street is Involved,additional flaggers or law <br /> enforcement personnel may be used. <br /> 3. A ONE-LANE ROAD AHEAD sign may also be necessary to provide adequate advance warning. <br /> 4. The situation depicted can be simplified by closing one or more of the Intersection approaches. <br /> If this cannot be done, and/or when capacity is a problem, consideration should be given to <br /> diverting through traffic to other roads or streets. <br /> 5. Flashing warning lights and/or flags may be used to call attention to the advanced warning <br /> signs. <br />