scope:

This document applies to rough-terrain variable-reach trucks (hereinafter referred to as 'trucks') that have a specific seated operator's position on the left-hand side of the boom or centre position (excluding operator position on the right side of the boom).

This document specifies a static test method for determining and evaluating the operator's visibility on a rectangular 1 m boundary around the rough-terrain variable-reach truck and on a 12 m radius visibility test circle. Performance requirements for visibility are specified in this document.

This document does not apply to

- trucks designed to handle freight containers (reach stackers),

- articulated telescopic wheel loaders,

- slewing trucks, or

- lorry mounted trucks.

NOTE The method used does not capture all of the aspects of the operator's visibility, but provides information to assist in determining the acceptability of visibility from the truck.