Safety communication must be consistent, clear, and transcend language barriers. To ensure this, the International Organization for Standardization (ISO) has developed a cohesive framework that provides a universally recognizable visual language. This system is designed to allow hazard warnings and safety information to be understood instantly at a glance, across different countries and languages, even when local, text-based, or alternative regulations apply.
In this article, we will explore the technical committees, specific safety signs standards, and management systems that work together to create a globally recognizable visual language for safety.
ISO/TC 145/SC 2: The Architects of ISO Safety Signs and Symbols
ISO/TC 145/SC 2 is the technical subcommittee of ISO responsible for the international standardization of safety identification, signs, shapes, symbols, and colors. This subcommittee acts as the architect of global visual safety, ensuring that critical safety messages, such as warning signs, prohibition signs, and fire safety signs, are understood globally, regardless of language or culture.
The ISO/TC 145/SC 2 is responsible for several critical safety signs standards, including:
ISO 7010: This is perhaps the most visible output of ISO/TC 145/SC 2. ISO 7010 provides a library of internationally agreed-upon symbols for specific hazards in workplaces and public spaces. Whether it is the running man for an emergency exit or the lightning bolt for electrical danger, ISO 7010 ensures the image itself is identical worldwide. This prevents confusion that could lead to fatal accidents in multicultural or high-turnover workplaces.
ISO 3864 Series: While ISO 7010 provides the symbols, the ISO 3864 series provides the design principles that allow a sign to be understood at a glance.
ISO 17398: This standard specifies requirements for the classification, performance, and durability of safety signs. While other ISO safety standards focus on what a sign looks like, ISO 17398 ensures the sign remains legible and effective throughout its service life, even in harsh environments.
The contribution of ISO/TC 145/SC 2 is essential for safety, facilitating instant recognition of risks like high voltage or slippery surfaces to improve workplace protection. By standardizing specific colors like safety red for stop and safety yellow for caution and geometric shapes, the subcommittee ensures that a warning is understood instantly, even in high-stress or low-visibility situations.
ISO/TC 145/SC 2 also provides a bridge between general safety labeling standards and specific workplace health and safety management systems, often collaborating with other committees such as ISO/TC 283. This collaboration ensures that visual standards are not just isolated icons, but integral components of comprehensive safety management systems such as ISO 45001.
ISO 45001: The Strategic Framework for Safety Management
While the standards above focus on the look of a safety sign, ISO 45001 provides the management strategy. As the international standard for Occupational Health and Safety (OH&S) Management Systems, it requires organizations to proactively identify hazards and communicate risks to workers. However, ISO 45001 is a high-level management standard; it mandates that facilities communicate, but it does not dictate the specific design of the signs. It creates the operational pull for a standardized visual language to ensure that hazard identification and communication are effective and inclusive of all workers.
ISO/TS 20559: The Practical Bridge for Safety Signing System Implementation
ISO/TS 20559, developed by ISO/TC 145/SC 2, serves as the practical bridge between the technical designs of SC 2 and the management goals of ISO 45001. This technical specification provides guidelines for the development and use of a visual safety signing system. It explains how to take the individual safety symbols from the ISO 7010 library and arrange them into a logical, system-wide communication strategy. By following ISO/TS 20559, an organization ensures that its visual safety measures aren't just a collection of random signs and symbols, but a structured system that fulfills its ISO 45001 safety objectives.
Protecting Your Facility with ISO Safety Signs
The integration of ISO safety sign standards builds an intuitive shield around facilities. By standardizing safety communication, these frameworks enable instant hazard recognition, reduce accidents, and improve operational efficiency. Standardized safety signs and symbols minimize downtime, accelerate training, and support global compliance. Investing in ISO-compliant signs ensures clarity, protects workers, and strengthens a culture of safety and performance.