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B51-14 (R2019) – Boiler, pressure vessel, and pressure piping code

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ISO 4009:2026

ISO 4009:2026 Commercial vehicles — Location of electrical and pneumatic connections between towing vehicles and trailers

CDN $129.00

This publication was last reviewed and confirmed in 2026.

Commercial vehicles — Location of electrical and pneumatic connections between towing vehicles and trailers

SKU: 623e90e1446f Categories: ,

Description

This document specifies the locations of coupling devices for electrical and pneumatic connections between towing and towed commercial road vehicles. It is applicable to heavy vehicles equipped with pneumatic braking systems and 24 V electrical equipment of the following types: drawbar-trailer combinations, centre-axle trailer combinations and multiple-vehicle combinations whose towing vehicles or trailers have rear‑mounted couplings or couplings mounted forward and below, and articulated vehicles.

This document is not applicable to car carriers, or road vehicles equipped only with fully automatic coupling system (FACS) according to the ISO 13044 series, not mounted on the front of the trailer.

Edition

4

Published Date

2026-09-16

Status

PUBLISHED

Pages

11

Language Detail Icon

English

Format Secure Icon

Secure PDF

Abstract

This document specifies the locations of coupling devices for electrical and pneumatic connections between towing and towed commercial road vehicles. It is applicable to heavy vehicles equipped with pneumatic braking systems and 24 V electrical equipment of the following types: drawbar-trailer combinations, centre-axle trailer combinations and multiple-vehicle combinations whose towing vehicles or trailers have rear‑mounted couplings or couplings mounted forward and below, and articulated vehicles.

This document is not applicable to car carriers, or road vehicles equipped only with fully automatic coupling system (FACS) according to the ISO 13044 series, not mounted on the front of the trailer.

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