ISO 5721:1989Withdrawn

Tractors for agriculture — Operator's field of vision

Tracteurs agricoles — Champ de visibilité du conducteur

This edition has been replaced by ISO 5721-1:2013, ISO 5721-2:2014.

Abstract / scope

This second edition cancels and replaces the first edition (1981). Specifies practical and mathematical methods of determining the masking effects of obstruction on the angles of vision forward, to the rear and upwards of seated operators of tractors. It does not take account of detachable implements and mounted elements, for example front loaders, pallets, ect.

Life cycle

Replaces

ISO 5721:1981WithdrawnAgricultural tractors — Operator's field of visionInternational Standard · Published 1 Aug 1981 · ISO/TC 23/SC 3

Replaced by

ISO/CD 21495-1Deleted (project abandoned)Agricultural machinery — Operator's field of vision — Part 1: Self-propelled machineryInternational Standard · ISO/TC 23/SC 3 ISO 5721-1:2013PublishedAgricultural tractors — Requirements, test procedures and acceptance criteria for the operator's field of vision — Part 1: Field of vision to the frontInternational Standard · Published 21 Jun 2013 · ISO/TC 23/SC 4 ISO 5721-2:2014PublishedAgricultural tractors— Requirements, test procedures and acceptance criteria for the operator's field of vision — Part 2: Field of vision to the side and to the rearInternational Standard · Published 3 Feb 2014 · ISO/TC 23/SC 4