"ISO 7010 compliant" appears in almost every signage tender. It is a reasonable thing to ask for, but on its own it settles less than most buyers expect: it describes the symbol on the sign, and says nothing about how large the sign must be, where it belongs, or how long it stays legible in the room you are putting it in.
Four standards divide that work between them. Knowing which one answers which question is the difference between a specification that can be checked and one that has to be argued about after installation.
The division of labour
| Standard | The question it answers |
|---|---|
| ISO 3864-1:2011 | Design principles for safety signs and safety markings — the safety colours and the geometric shapes that carry meaning |
| ISO 3864-3:2024 | Design principles for the graphical symbols placed inside those shapes |
| ISO 7010:2019 | The registered safety signs themselves — specific shape-and-symbol combinations, each with a reference code |
| ISO 7001:2023 | Public information symbols — wayfinding and facilities, which are not safety signs |
Read downwards, this is a chain from principle to catalogue. ISO 3864-1 fixes what a red circular band or a yellow triangle *means*. ISO 3864-3 fixes how the symbol drawn inside it must be constructed. ISO 7010 then applies both to produce the specific, registered signs — the running figure at a door, the fire extinguisher symbol, the eye-protection symbol — so that the same hazard is marked the same way from one site and one country to the next.
Specify by reference code, not by description
ISO 7010 gives every registered sign a reference code, and the code is the precise way to specify one. The prefix states the function:
| Prefix | Sign function |
|---|---|
| E | Safe condition — escape routes, first aid, emergency equipment |
| F | Fire-fighting equipment |
| M | Mandatory action |
| P | Prohibition |
| W | Warning |
"Emergency exit sign, left arrow" can be filled by several different signs. A reference code cannot. If a specific sign is meant, name its code; if a family is meant, say so explicitly. This one habit removes most of the ambiguity from a signage schedule, and it makes a delivery checkable against the order rather than against someone's recollection of the walkthrough.
What ISO 7010 does not settle
Three questions sit outside the symbol standard, and each has to be answered somewhere else.
How big the sign has to be. A sign is only doing its job if it can be read from where the person needing it actually stands. Sign size therefore follows the viewing distance in the space, together with the lighting conditions and your risk assessment. ISO 3864-1 is the reference to work from here — take the requirement from the current standard text rather than scaling from an existing sign or a photograph.
Where it goes. Placement follows the escape route, the equipment location and the hazard, which come from your own layout and risk assessment. A correct sign in the wrong place is a finding at the next inspection, and no product standard prevents it.
How long it stays legible. Durability is not a symbol question at all. UV, cleaning chemicals, salt, temperature cycling and abrasion decide whether the sign you installed is still compliant in five years, and those properties belong to the substrate — stated on the product documentation with the test each figure was measured under. A faded sign is not a compliant sign.
The distinction that gets missed: ISO 7001 is not a safety standard
ISO 7001:2023 covers public information symbols — the symbols that tell people where the lift, the toilets, the ticket office or the waiting area are. They are drawn to their own design rules and they carry no hazard meaning.
The two get mixed up in both directions, and both directions are a defect. A public information symbol used where a safety sign is required does not carry the safety colour and shape that make the message legible under stress. A safety sign used for plain wayfinding devalues the safety colours themselves: if green and white is used to point at the cafeteria as well as the escape route, the escape route stops standing out. Where an accessibility requirement also applies, that is a third and separate question, and ISO 21542:2021 is the reference for accessibility in building construction.
A specification that can be checked
1. Name the standard with its edition year. "ISO 7010" without a year leaves the revision open. Write ISO 7010:2019. 2. Name the reference codes for the signs you mean. 3. State the environment — indoor or outdoor, UV exposure, cleaning regime, temperature range, wet or dry, salt. Let the substrate follow from that rather than naming a material up front. 4. Ask for figures with their test conditions. A number without the condition it was measured under is not documentation. 5. Say who owns placement, and keep the sign schedule with the survey it came from.
Documentation before ordering
Every DENFOIL product line states which standards it is designed to meet, and the numbers behind those claims sit in the product documentation rather than in this article. Request a document package , or find your distributor in Denmark, Norway, Sweden or the Netherlands to review a sign schedule for your site.