UIC 535-2 (E) 4th Edition, May 2006
STANDARDISATION AND POSITIONING ON WAGONS OF STEPS, END PLATFORMS,GANGWAYS,
HANDRAILS, TOW HOOKS, AUTOMATIC COUPLER (AC), AUTOMATIC COUPLER (AC),
AUTOMATIC DRAW-ON COUPLING AND BRAKE VALVE CONTROLS ON THE UIC MEMBER RUS
AND OSJD MEMBER RUS