R 408.12432 Foot pedals.

Rule 2432. (1) The pedal mechanism shall be protected to prevent unintended operation from falling or moving objects, or by accidental stepping onto the pedal. (2) A pad with a nonslip contact area shall be firmly attached to the pedal. (3) The pedal return spring shall be of the compression type, operating on a rod or guided within a hole or tube, or designed to prevent interleaving of spring coils in event of breakage. (4) If pedal counterweights are provided, the path of the travel of the weight shall be enclosed.