You cannot rely on random forum links for safety standards. Here is the legitimate supply chain for the document:
Warning on "Preview" PDFs: Many sites offer a red-lined "Preview" PDF. This is legal but useless for engineering. It lacks the normative references (the calculations for safety distances). You cannot certify a machine with a preview.
A software update that changes obstacle detection algorithms is considered a "significant modification." You must re-run verification tests. PDF Solution: Clause 5.4 – "Modifications and repairs."
Critical Note: If your vehicle is manually driven (even occasionally), ISO 3691-1 applies. If it is driverless, ISO 3691-4 is mandatory. Iso 3691-4 Pdf
The standard requires that users (not just maintenance staff) receive documented instruction. Key topics:
The most current version (as of 2025) is ISO 3691-4:2023 (replacing the 2020 edition). Key updates found in the latest PDF include:
Searching for "ISO 3691-4 PDF free download" is tempting, but it carries significant risks. You cannot rely on random forum links for safety standards
Formally titled "Industrial trucks — Safety requirements and verification — Part 4: Driverless industrial trucks and their systems," this standard is part of the ISO 3691 series. While other parts cover counterbalanced lift trucks, pedestrian-controlled trucks, and rough-terrain trucks, Part 4 specifically addresses autonomous and semi-autonomous trucks—vehicles that operate without an on-board driver.
The ISO 3691-4 PDF is more than a technical document—it is a critical safety tool for any organization deploying driverless industrial trucks. By adhering to this standard, you reduce workplace accidents, ensure regulatory compliance, and build a foundation for scalable, trustworthy automation.
Action Step: Purchase the current ISO 3691-4:2023 PDF from your national standards body, and incorporate its requirements into your next AGV/AMR project from concept to commissioning. Warning on "Preview" PDFs: Many sites offer a
Need help interpreting a specific clause of ISO 3691-4? Consult a certified functional safety engineer or a TÜV-certified machinery safety expert.
ISO 3691-4:2023 is the latest international safety standard for driverless industrial trucks, including automated guided vehicles (AGVs), autonomous mobile robots (AMRs), and their systems. It provides the essential safety requirements and verification methods for these machines to operate safely alongside humans in industrial environments. Key Features of ISO 3691-4 ISO 3691-4:2020 A Standard for Automated Guided Vehicles.