Three Knob Noster men and a pair of Kansas residents were injured in an accident Tuesday night on Highway 50.  The Highway Patrol reports Christopher Boulais, 35, of Knob Noster, attempted to cross the eastbound lanes of 50 at Route D and pulled into the path of a vehicle driven by Edward Epps, 46, of Overland Park, KS.  Boulais refused treatment at the scene for moderate injures.  His two passengers, Carter Boulais, 6, and Hunter Boulais, 9, were transported to Western Missouri Medical Center with minor injuries.  Two children in the Epps vehicle, Payton Epps, 18, and Mason Epps, 10, also received minor injuries.