Overview
EN ISO 3691-1:2015 (ISO 3691-1:2011, incl. Cor 1:2013) is the European adoption of the international safety standard for self-propelled industrial trucks (excluding driverless, variable‑reach and burden‑carrier trucks). It sets safety requirements and means of verification for a wide range of powered trucks used in material handling - from counterbalanced forklifts to pallet trucks and outdoor rough‑terrain trucks - and supports conformity with the EU Machinery Directive (2006/42/EC).
Key topics and technical requirements
The standard addresses design, protective measures and verification across the lifecycle of industrial trucks. Major technical topics include:
- Scope of covered truck types: counterbalanced trucks, reach trucks with retractable mast/fork arm, straddle trucks, pallet‑stacking and pallet trucks, high‑lift platform trucks, side‑loading and lateral‑stacking trucks, bidirectional/multidirectional trucks, tractors (drawbar pull ≤ 20 000 N), rough‑terrain trucks; powered by battery, diesel, gasoline or LPG.
- Safety systems and controls: starting/moving interlocks, braking systems, manual control actuators and power systems.
- Lifting and tilting systems: requirements for forks, masts, elevating operator positions (up to 1 200 mm) and load handling devices.
- Operator environment: operator positions, visibility, lighting, protective devices and ergonomics.
- Stability and structural integrity: tests and design measures to ensure static/dynamic stability and strength.
- Verification methods: structural tests, functional verification procedures and criteria.
- Information for use: instruction handbook requirements, marking and documentation for safe operation and maintenance.
- Environmental and towing considerations: environmental conditions, devices for towing and regional application notes.
(Reference: clause structure in the standard - e.g., clauses 4–6, Annexes A & B.)
Practical applications
EN ISO 3691-1 is used to:
- Design safe forklifts and other powered industrial trucks in compliance with international best practice.
- Develop factory acceptance tests and verification protocols (structural and functional tests).
- Prepare operator manuals, marking and CE‑conformity documentation required under the Machinery Directive.
- Create procurement specifications and supplier acceptance criteria for safe material‑handling equipment.
- Inform maintenance, inspection and safety management programs to reduce workplace accidents.
Who should use this standard
- Design and R&D engineers for industrial trucks
- Manufacturers and OEM compliance teams
- Safety managers, plant engineers and fleet managers
- Test laboratories and certification bodies
- Procurement and maintenance professionals
- Regulatory and inspection authorities
Related standards
ISO 3691 is a multi‑part family. Relevant complementary parts include ISO 3691‑2 to ISO 3691‑6 and technical specifications ISO/TS 3691‑7 and ISO/TS 3691‑8 for regional requirements. Use EN ISO 3691‑1 alongside ISO 12100 (risk assessment) and applicable local regulations.
Keywords: EN ISO 3691-1:2015, ISO 3691-1, industrial trucks safety, forklift safety standard, self-propelled industrial trucks, verification, Machinery Directive.