SAFETY, NOISE AND VIBRATION PLATES 2.1.4 VIBRATIONS TO WHICH THE OPERATOR IS SUBJECTED q According to the results of the tests carried out to determine the vibrations transmitted to the operator by the machine, the upper limbs are subjected to vibrations lower than 2.5 m/sq.sec., while the seated part of the body is subjected to vibrations lower than 0.5 m/sq.sec. 29