International Standard
ISO 15501-1:2025
Road vehicles — Compressed natural gas (CNG) fuel systems — Part 1: Safety requirements
Reference number
ISO 15501-1:2025
Edition 4
2025-12
© ISO 2026
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Published (Edition 4, 2025)

ISO 15501-1:2025

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Abstract

This document specifies the minimum safety requirements applicable for the functionality of compressed natural gas (CNG) on-board fuel systems intended for use on the types of motor vehicles defined in ISO 3833. This document is applicable to vehicles using compressed natural gas in accordance with ISO 15403-1, including mono-fuel, bi-fuel or dual-fuel applications, original-production and converted vehicles.

All matters relating to the skills of installers and converters have been excluded from this document.

General information

  • Status
     : Published
    Publication date
     : 2025-12
    Stage
    : International Standard published [60.60]
  • Edition
     : 4
    Number of pages
     : 15
  • Technical Committee :
    ISO/TC 22/SC 41
    ICS :
    43.060.40 
  • RSS updates

Life cycle

Sustainable Development Goals

This standard contributes to the following Sustainable Development Goal

9
Industry, Innovation and Infrastructure

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