Douglas County commissioners directed staff Thursday to continue work with state officials studying whether the deadly intersection at Airport Road and Highway 395 deserves a traffic signal.The board heard Thursday from Tom Moore, assistant chief traffic engineer for the Nevada Department of Transportation."Traffic signals are an extremely emotional subject," Moore said. "I understand and sympathize with people who are directly affected by these accidents."He said it was NDOT'S job to balance a timely commute with safety aspects."When a request for a signal comes in, the very first thing we do is go out and obtain the (traffic) counts. Federal law …