ISO 3584:1975

Road vehicles — Mounting of mechanical coupling devices on rear cross members of trucks

Specifies the dimensional requirements for mounting coupling devices (hooks or forks). Applies to those vehicles that are currently used for international commercial transport, to be coupled to trailers the towed weight of which is greater than 3,5 tonnes. Defines the categories of weights 1, 2, and 3. Two figures illustrate shapes and reference quantities of concern.