Overview
EN ISO 18063-2:2021 - Rough‑terrain trucks: Visibility test methods and their verification - Part 2: Slewing rough‑terrain variable‑reach trucks defines how to measure and evaluate operator visibility for slewing rough‑terrain variable‑reach trucks. The standard applies to trucks with a seated operator position on the left‑hand side of the boom or a centre position (operator on the right side is excluded). It specifies a static test method using a rectangular boundary close around the truck and a 12 m visibility test circle, and allows an alternative of calculation method or computer simulation for verification. The standard also sets out required manufacturer information and links to conformity with EU machinery requirements.
Key topics and technical requirements
- Scope and applicability
- Applies to slewing rough‑terrain variable‑reach trucks as defined in ISO 5053‑1:2020 (3.22).
- Excludes operator position on the right side of the boom.
- Test geometry
- Visibility is evaluated on a rectangular boundary close around the truck and on a 12 m visibility test circle.
- Test methods
- Primary: static, physical test using specified test apparatus (light source, vertical test objects, observation mirrors).
- Alternative: calculation method or computer simulation for visibility determination and verification.
- Measurement and evaluation
- Procedures for positioning the truck, test‑surface marking, and measurement of maskings (obstructions to direct view).
- Performance criteria for acceptable visibility levels, including fork arm visibility.
- Reporting requirements: test reports, drawings, and information manufacturers must provide for use and verification.
- Limitations
- Does not provide performance requirements for additional means for indirect visibility (e.g., cameras or proximity sensors).
- Safety and compliance
- Annex ZA maps the standard to Essential Requirements of EU Directive 2006/42/EC (Machinery Directive), aiding presumption of conformity where applicable.
Applications
- Ensures operator sightlines are assessed for safe operation of slewing, variable‑reach rough‑terrain trucks used in construction, agriculture, forestry, and material handling on uneven ground.
- Useful for:
- OEMs and truck designers validating cab layout and boom geometry for visibility.
- Test laboratories conducting visibility tests or simulations.
- Safety engineers, fleet managers, and compliance officers evaluating machine conformity to visibility performance criteria.
- Regulatory and certification bodies assessing compliance with machinery safety requirements.
Related standards and references
- ISO 5053‑1:2020 - definition and classification of rough‑terrain trucks referenced in scope.
- EU Directive 2006/42/EC - referenced via Annex ZA for essential safety requirements.
Keywords: EN ISO 18063-2:2021, rough‑terrain trucks, visibility test methods, slewing variable‑reach trucks, operator visibility, visibility performance criteria, visibility verification, visibility test circle, industrial trucks, machinery safety.
