The Warning SignalThe Warning Signal is a 1926 American silent action drama film directed by Charles J. Hunt and starring Gladys Hulette, Lincoln Stedman and Clarence Burton.SynopsisThe son of a railroad owner wants to make his own way in the world, and so takes a job with the company under an assumed identity. He battles with a rival and manages to thwart a dangerous collision. At the end he is promoted to president of the railroad by his father.Cast Gladys Hulette Kent Mead Lincoln Stedman Clarence Burton Martha Mattox William H. Turner Joseph W. Girard