The thesis has made up a few points to the original Three-Three Normalized Theorem edition. The first point contends that the theorem contains causes verification of accidents, which is in reality the essential practical function of the theorem. The second point has conducted a principle oriented probe into the Three-three Normalized Theorem. 7 major principles are proposed based upon a dissection on basic features of accidents. The third point has made it clear why principles are unveiled. To play a directional role in correctly tacking road accidents and practices in safety management are among the very reasons. Examples are listed for further discussion.