GB/T 21939-2008
ActiveEarth-moving machinery - Warning devices for slow-moving machines - Ultrasonic and other systems
土方机械 低速机器报警装置 超声波及其它系统
Application Summary AI generated
This standard specifies technical requirements and test methods for ultrasonic and other warning systems used on slow-moving earth-moving machinery. It is applied to construction and mining equipment such as compactors, graders, and loaders operating at low speeds to detect obstacles and personnel in blind spots. The standard ensures these warning devices function reliably in work zones to prevent collisions and improve operator and bystander safety.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.