ISO 9533:1989

Earth-moving machinery — Machine-mounted forward and reverse audible warning alarm — Sound test method

Outlines the procedures and sets the criteria necessary to evaluate the audible performance of alarms mounted on earth-moving machines intended to warn personnel of the potential hazard of the machine moving under its own power, either forward or in reverse. The tests are carried out on a stationary machine. Applies to earth-moving machinery as defined in ISO 6165.