GB/T 39521-2020 Tractors and machinery for agriculture—Auto-guidance systems for operator-controlled tractors and self-propelled machines—Safety requirements

Scope

This standard specifies the safety requirements for automatic navigation systems used in agricultural tractors and self-propelled agricultural machinery.
This standard applies to automatic navigation systems installed by tractor or self-propelled machinery manufacturers on their equipment, as well as automatic navigation systems retrofitted to equipment after it leaves the factory.
This standard applies to navigation systems that require the on-board driver to perform the main control of the tractor or self-propelled machinery.
This standard does not specify the necessary requirements to ensure the integrity of complex electronic control systems in automatic navigation systems. These requirements are given in other standards related to complex electrical/electronic vehicle control systems.
When the requirements of this standard differ from those of specific machine standards, the requirements of the specific machine standards take precedence over those of this standard.
This standard does not apply to tractors and self-propelled machinery with automatic navigation systems produced before the date of publication, nor to automatic navigation systems retrofitted to equipment on the market before the date of publication.
Note: Specific road traffic regulations may impose additional requirements on automatic navigation systems.

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