PD ISO TR 11954-2024 PDF

Full title and description

ISO/TR 11954:2024 — Fuel cell road vehicles — Performance measurement — Vehicles fuelled with compressed hydrogen. Technical Report providing standardized test methods to measure performance characteristics (for example acceleration, maximum speed and hill-climbing ability) of fuel cell hybrid electric passenger cars and light‑duty trucks fuelled with compressed hydrogen.

Abstract

This technical report specifies procedures and test methods for measuring vehicle performance of fuel cell hybrid electric vehicles (FCHEV) that use compressed hydrogen. It covers performance metrics such as acceleration, maximum speed and hill-climbing ability for passenger cars and light‑duty trucks with a maximum authorised total mass of 3 500 kg. The report describes relevant test conditions, instrumentation, measurement and data reporting practices to enable repeatable, comparable performance assessment.

General information

• Status: Published
• Publication date: 5 January 2024
• Publisher: International Organization for Standardization (ISO)
• ICS / categories: 43.120 (Electric road vehicles)
• Edition / version: Edition 2 (2024)
• Number of pages: 15

Scope

Applies to fuel cell hybrid electric passenger cars and light‑duty trucks fuelled with compressed hydrogen whose maximum authorised total mass does not exceed 3 500 kg. Defines test methods for measuring vehicle performance parameters such as acceleration, maximum speed and hill climbing ability, together with requirements for test conditions, instrumentation, measurement procedures and reporting to ensure consistent, reproducible results.

Key topics and requirements

• Definitions and vehicle applicability (FCHEV, passenger cars, light‑duty trucks up to 3 500 kg).
• Test procedures for acceleration runs (specified speeds, measurement points and repeatability requirements).
• Methods to determine maximum speed under defined conditions.
• Hill‑climb performance measurement (grade, speed, load and environmental control).
• Instrumentation, accuracy and calibration requirements for speed, time, gradient and vehicle state measurements.
• Test conditioning, ambient and road surface considerations, and fuel (compressed hydrogen) handling notes relevant to performance testing.
• Data recording, calculation methods and reporting formats to support comparison and verification of results.
• Safety and hydrogen‑specific considerations referenced for test setup and execution.

Typical use and users

Used by vehicle manufacturers, test laboratories, type‑approval and regulatory authorities, research institutions and component/system suppliers involved in hydrogen fuel cell vehicle development and validation. It supports performance verification during design, pre‑production testing, certification activities and comparative benchmarking of FCHEV models.

Related standards

Key related documents include the earlier ISO/TR 11954:2008 (withdrawn, replaced by this 2024 edition); ISO 23828:2022 (Energy consumption measurement for vehicles fuelled with compressed hydrogen); ISO/TR 17326:2023 (Cold start performance for FCHEV); ISO 23273:2013 (Safety specifications — protection against hydrogen hazards); and hydrogen fuel quality and handling standards such as ISO 14687 (hydrogen fuel quality). Also linked to work from ISO/TC 22/SC 37 on electrically propelled and fuel‑cell vehicles.

Keywords

fuel cell, FCHEV, compressed hydrogen, performance measurement, acceleration, maximum speed, hill climb, test methods, light‑duty vehicles, ISO/TC 22/SC 37

FAQ

Q: What is this standard?

A: ISO/TR 11954:2024 is a technical report that specifies standardized methods for measuring performance (acceleration, maximum speed, hill‑climb) of fuel cell hybrid electric passenger cars and light‑duty trucks fuelled with compressed hydrogen.

Q: What does it cover?

A: It covers vehicle applicability (FCHEV up to 3 500 kg), test procedures, required instrumentation and calibration, test conditions and data recording/reporting practices to ensure repeatable performance measurements.

Q: Who typically uses it?

A: Vehicle OEMs, test laboratories, certification and regulatory bodies, researchers and component/system suppliers working on hydrogen fuel cell road vehicles.

Q: Is it current or superseded?

A: It is current. ISO/TR 11954:2024 was published on 5 January 2024 and supersedes ISO/TR 11954:2008.

Q: Is it part of a series?

A: Yes — it is part of a body of ISO documents addressing fuel cell road vehicles (work by ISO/TC 22/SC 37). Related reports and standards cover energy consumption (ISO 23828:2022), cold start performance (ISO/TR 17326:2023), hydrogen hazard protection (ISO 23273:2013) and hydrogen fuel quality (ISO 14687 series).

Q: What are the key keywords?

A: Fuel cell, FCHEV, compressed hydrogen, performance measurement, acceleration, maximum speed, hill climb, test methods, light‑duty vehicles.