ISO/TS 28923:2012规定了通过使用工具和联锁活动防护装置打开固定防护装置的设计和施工的安全要求及其验证，该装置用于自动驾驶机器和农业用安装式、半安装式或牵引式机器上的动力传动装置的活动部件。此外，它还规定了制造商提供的安全工作实践（包括残余风险）信息类型。 它处理与固定防护装置相关的重大危险、危险情况和事件，固定防护装置将在制造商预期的条件下，通过使用工具和动力传动装置活动部件的联锁活动防护装置打开。 它不适用于农业、草坪和园艺设备中使用的农业和林业拖拉机、飞机和气垫车的动力传动装置的运动部件防护装置，或农业和林业牵引车与安装或牵引机具之间的PTO驱动轴防护装置。

ISO/TS 28923:2012 specifies the safety requirements and their verification for the design and construction of fixed guards to be opened by the use of a tool and interlocking movable guards for moving parts of the power transmission on self-propelled ride-on machines and mounted, semi-mounted or trailed machines used in agriculture. In addition, it specifies the type of information on safe working practices (including residual risks) to be provided by the manufacturer. It deals with the significant hazards, hazardous situations and events relevant for fixed guards to be opened by the use of a tool and interlocking movable guards of moving parts of power transmission used as intended and under the conditions foreseen by the manufacturer. It is not applicable to guards of moving parts of the power transmission of agricultural and forestry tractors, aircraft and air cushion vehicles used in agriculture, lawn and garden equipment, or guards for PTO drive shafts between agricultural and forestry tractors and mounted or towed implements.