Evaluation of Autonomous Products

UL Standard Edition 2 Published Date: March 15, 2022 Last Revision: October 06, 2022 ANSI Approved: March 15, 2022

Scope

046000-000000-000000

2 Scope

1 Scope summary

2 1.1 This standard covers the safety principles,

risk

mitigation, tools, techniques, and lifecycle processes for building and evaluating a

safety argument

for vehicles that can operate in an

autonomous

mode, whether the

item

is individual or part of a team such as a

platoon

2 1.2 Operation is assumed to occur without human supervision and without expectation of human intervention in performing and supervising the dynamic driving task and other normal system operations based upon the current

item

state and ability to sense and otherwise interpret the operating environment. Human contributions to safety in other than normal operation are considered (e.g., maintenance), as are interactions with humans who are not operating the

item

(e.g., pedestrians).

2 1.3 This standard generally uses the term “

item

” rather than “system” or “product” when referring to the scope of the

safety case

as well as the operation of the

item

. This approach is in recognition of the possibility that the safety of the

item

might rely upon infrastructure, services, support processes, and other factors that might not normally be considered part of a system such as a vehicle per se, but which materially affect its safety and therefore are all considered within the scope of the

item

being assessed for

conformance

. For a team of vehicles the

item

might be scoped as an individual vehicle that is a member of a team or instead the

item

might be designed to function as a team as a whole without reducing the safety of any one vehicle.

2 1.4 This standard assumes that the

item

autonomously operates starting at some well-defined initial state to some other well-defined end state without human intervention. Human input might influence the selection of desirable states (e.g., via an occupant requesting a destination). However, the extent to which human operators

mitigate

or introduce

risk

by performing or supervising a dynamic control task (e.g., by driving or taking responsibility for monitoring system operation) is outside the scope of the standard. Similarly, the extent to which human operator performance or non-performance is involved in

risks

related to transferring human driver control to or from the

item

is also outside the scope of the standard. However, ensuring that the

item

itself properly performs any change of control functions if and when it is supposed to is generally within the scope of the standard since it can adversely affect operation in fully

autonomous

mode as well. Thus, while portions of this standard might be helpful for addressing less than fully

autonomous

vehicles, issues involving human driver responsibilities, vigilance, and ability to properly accept responsibility for vehicle control are out of scope for this standard.

2 1.5 While information security is an essential topic, the details of that area are out of scope for this standard beyond a general requirement for a Security Plan and

prompt elements

that are possibly unique to

autonomous

vehicle operation in comparison to other vehicular security requirements. Reasonably foreseeable misuse and abuse as well as physical attacks (e.g., physical sensor damage) are in scope.

2 1.6 The requirements of this standard are considered to be at a necessary, but possibly not sufficient, level of completeness and rigor to create an acceptably well-formed and acceptably complete

item

safety case

. In particular,

prompt element

lists are considered non-exhaustive

, with an expectation that design teams will include additional

items

as relevant to the

item

and its

operational design domain

Summary of Topics

Summary of Topics s4600_2_sum.html

Summary of Topics

This New Edition of ANSI/UL 4600 dated March 15, 2022 includes the following changes in requirements:

• Revise Requirements regarding Safety Case; Section 5

• Revise Requirements for Faults, Hazards, Risks; Section 6

• Revise Requirements in Assessment; Section 3

• Revise Sensor Requirements; Section 8

• Revise Requirements for Object Tracking; Section 8

• Add requirement to 7.3.1.2 to allow unconditional on demand and safe egress by authorized operator or occupant

• Terminology updates (including change in terminology of “self-audit” to “self-assessment”)

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CSDS Proposal

CSDS Proposals

An electronic document associated with a UL Standard for Safety or Outline of Investigation, and issued by UL to propose:

A revision of a single or multiple requirement(s).
A complete new edition of an existing Standard or Outline.
A new Standard or Outline that has not previously been published.

CSDS Proposals provide access to view the proposal and submit comments within UL's Collaborative Standards Development System (CSDS) appropriately.

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