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This document provides a taxonomy for driving automation system features that fall under Principle of Operation B according to the aforementioned categories. Driving automation system features perform part or all of the DDT on a sustained basis and, as such, fundamentally alter or eliminate the role of the driver in operating the vehicle. Features that fall into Principles of Operation A or C are not classifiable under the taxonomy described in this document, either because they do not directly affect vehicle motion control (A), or because they do not provide sustained performance of part or all of the DDT (C). It should be noted, however, that an individual feature may incorporate the functionality according to more than one Principle of Operation, such as a crash avoidance feature (C) that provides a warning to the driver (A) when it is engaged. Similarly, the crash avoidance capabilities otherwise provided by features that fall under Principle of Operation C on vehicles operated by human drivers are nevertheless performed as part of the sustained driving automation (B) provided by ADS-operated vehicles. For example, automatic emergency braking (AEB), which automatically brakes the vehicle to avoid a collision with a vehicle/object in its forward path, is not a standalone feature on an ADS-DV. However, emergency braking in response to the actions of other road users and to objects and events in traffic is included in the ADS’s overall driving automation capabilities.
本文档根据上述分类，进行了归属于操作原则B的驾驶自动化系统功能的分类。驾驶自动化系统的功能是持续地执行部分或全部DDT ，因而，从根本上改变或消除了驾驶员在驾驶车辆中的作用。属于操作原则A或C的功能，在本文档的描述中没有被分类，因为他们既不直接影响车辆运动控制（A）,也不执行持续的部分或全部DDT（C）。不过，值得注意的是，一个单独的功能也可以根据多个操作原则合并功能，如对司机进行警报提示（A）的避免碰撞功能（C）。类似地，人类所驾驶的车辆上的避免碰撞能力，虽然属于操作原则C ，但也可以表现为由ADS操作车辆提供的持续性驾驶自动化（B）的部分。例如，自动紧急制动（AEB）可以自动刹车以避免与前进道路上的车辆/物体发生碰撞，但这并不是ADS-DV的独立功能。不过，为了避开其他道路使用者的行动以及交通物体、事件的紧急刹车，是包含在ADS整体的驾驶自动化能力中的。
新增术语部分
此次更新版本共新增11个术语，具体如下：
3.7.1 MANEUVER-BASED FEATURE
A driving automation system feature equipped on a conventional vehicle that either:
一种安装在常规车辆上的驾驶自动化系统功能，要么：
1.Supports the driver by executing a limited set of lateral and/or longitudinal vehicle motion control actions sufficient to fulfil a specific, narrowly defined use case (e.g., parking maneuver), while the driver performs the rest of the DDT and supervises the Level 1 or Level 2 feature’s performance (i.e., Level 1 or Level 2 driver support features)