ISO TS 18571-2024 PDF

Full title and description

St ISO/TS 18571:2024 — Road vehicles — Objective rating metric for non-ambiguous signals. This technical specification defines objective metrics and rating procedures to quantify the correlation between two non-ambiguous time-history signals (for example, a physical test signal and a computational model signal) with primary application in vehicle safety validation and related engineering analyses.

Abstract

This document provides validation metrics and rating procedures to calculate the level of correlation between two non-ambiguous signals obtained from a physical test and a computational model. It is aimed at vehicle safety applications and validates objective comparisons of time-history signals (forces, moments, accelerations and similar loads) across various loading cases. Annex A contains application examples.

General information

• Status: Published
• Publication date: 15 May 2024
• Publisher: International Organization for Standardization (ISO)
• ICS / categories: 43.040.01 (Road vehicle systems — general)
• Edition / version: Edition 2 (2024)
• Number of pages: 93

Key bibliographic details above from the ISO bibliographic entry and distributor listings.

Scope

Specifies objective metrics and rating procedures for validating the correlation between pairs of non-ambiguous time-history signals (model vs test). The scope is focused on vehicle safety validation but the metric definitions and procedures may be applied to other engineering areas involving time-history signal comparisons. Annexes provide example applications; the document does not aim to prescribe specific test setups beyond the signal-comparison methodology.

Key topics and requirements

• Definitions of objective validation metrics for non-ambiguous time-history signals (statistical and rating measures).
• Procedures to align, normalise and compare time-history signals (pre-processing and correlation steps).
• Rating scales and acceptance criteria to quantify model/test agreement for forces, moments, accelerations and similar signals.
• Guidance on applying the metric across different loading cases and physical conditions relevant to vehicle safety.
• Examples of application provided in an informative annex to illustrate typical use cases.

Typical use and users

Used by automotive engineers, simulation validation specialists, crash and occupant safety teams, test laboratories and R&D organisations that compare computational models to physical test data. It is intended for practitioners who need reproducible, objective measures of signal agreement to support model validation, verification and safety assessments.

Related standards

This technical specification is published by ISO/TC 22/SC 36 and replaces the earlier ISO/TS 18571:2014 (withdrawn and superseded by the 2024 edition). It is typically applied alongside other vehicle safety and validation standards and best practices (for example, functional-safety and test-procedure standards in the automotive domain).

Keywords

objective metric, signal comparison, time-history signals, model validation, vehicle safety, correlation metric, rating procedure, signal alignment, validation metrics

FAQ

Q: What is this standard?

A: ISO/TS 18571:2024 is a technical specification that defines objective metrics and procedures to rate the correlation between two non-ambiguous time-history signals (commonly used to compare test measurements and simulation outputs in vehicle safety applications).

Q: What does it cover?

A: It covers validation metrics, preprocessing and alignment procedures, rating scales and example applications to assess agreement between signals such as forces, moments and accelerations. It is focused on vehicle-safety-related comparisons but the methods can be applied more broadly.

Q: Who typically uses it?

A: Automotive engineers, simulation and test laboratories, crash/occupant safety teams, model-validation specialists and R&D organisations involved in comparing physical test data with computational models.

Q: Is it current or superseded?

A: Current — ISO/TS 18571:2024 (Edition 2) was published in May 2024 and supersedes the earlier ISO/TS 18571:2014 (withdrawn).

Q: Is it part of a series?

A: It is a Technical Specification in the ISO/TC 22 (Road vehicles) portfolio, managed under subcommittee SC 36. It stands as a focused metric/procedure document rather than as a sequential numbered series of standards.

Q: What are the key keywords?

A: Objective metric, non-ambiguous signals, signal correlation, model validation, time-history comparison, vehicle safety.