本SAE信息报告涉及一类特殊的汽车自适应设备，包括对作为个人许可车辆原始设备提供的动力转向系统的修改。这些修改通常被称为“改进的助力转向”或“减力动力转向”。修改的目的是改变驾驶员操纵车辆所需的工作量。主要关注的是可靠性的保持、身体残疾驾驶员的易用性和可维护性。作为一份信息报告，本报告和附录中测试程序中提出的性能测量的数值虽然基于当时可用的最佳知识，但尚未得到验证。

This SAE Information Report relates to a special class of automotive adaptive equipment which consists of modifications to the power steering system provided as original equipment on personally licensed vehicles. These modifications are generically called “modified effort steering” or “reduced effort power steering.” The purpose of the modification is to alter the amount of driver effort required to steer the vehicle. Retention of reliability, ease of use for physically disabled drivers and maintainability are of primary concern. As an Information Report, the numerical values for performance measurements presented in this report and in the test procedure in the appendices, while based upon the best knowledge available at the time, have not been validated.