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ISO 20918:2007

Road vehicles — Braking threshold pressures for heavy commercial vehicle combinations with fully pneumatic braking systems — Test with roller brake tester

Publication date:   Oct 9, 2007

General information

90.60   Close of review   Sep 3, 2026

ISO

ISO/TC 22/SC 33 Vehicle dynamics and chassis components

International Standard

43.040.40   Braking systems

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Scope

ISO 20918:2007 describes a method to evaluate the braking threshold of heavy commercial vehicle combinations with pneumatic braking systems, by means of a roller brake tester.
ISO 20918:2007 describes procedures for workshops and garages and provides

a recommended pressure range of the system threshold pressure for motor vehicles and trailers, and
a recommended practice for determining the system threshold pressure.

ISO 20918:2007 covers neither high-pressure compatibility, including the control of the coefficient of friction between lining/pad and drum/disc, nor dynamic influences. ISO 20918:2007 is not for use at Type Approval.

Life cycle

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PUBLISHED
ISO 20918:2007
90.60 Close of review
Sep 3, 2026