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  These cattle grids show up in the  OSM generic routable map as "  bollards "  not grids like in this map shows . The effect is that in Garmin Basecamp is the bollard symbol blocks routing across that bollard if there is another way around .  It only routes over the bollard symbol if the road is a dead end . It routes over some and not others . Can someone please remove the bollard symbols from the Australian maps . 