A warning sign is an admission, not a kindness

An industrial hazard placard, black type on safety yellow. Three stacked bands, widest at the top: BLACK ICE ACTIVE, largest. LETHAL COUNTERMEASURE beneath it, narrower. A thin rule, then NO UNAUTHORISED ENTRY. Bottom right, small enough to miss: 14.3.

That clause number is the whole story. Nobody puts a number on a threat unless a lawyer asked them to.

Why does a warning plate have a clause number on it?

Because somewhere there's a document 14.3 refers back to, and the plate exists to satisfy it.

A hazard sign isn't written for the person about to be hurt by the thing it names — it's written for whoever might get sued afterwards. The clause number is a citation, the same shape as a footnote: this warning was required by a specific provision, filed by a specific department, before the lethal countermeasure it describes was allowed to go live. The sign is downstream of a decision made in an office, not on the wire.

What does the sign actually admit by existing?

That the danger behind it is deliberate, and somebody signed off on it.

Accidents don't get placards with clause numbers — they get incident reports, after the fact. BLACK ICE ACTIVE is a placard because the countermeasure was designed, budgeted, tested and installed on purpose, and the people who installed it knew in advance it could kill someone. The sign isn't there to reduce that risk. It's there to prove, on paper, that the risk was disclosed before it happened, which is a different job entirely and a considerably more cynical one.

Who is a warning plate actually protecting?

Whoever owns the wall it's bolted to.

Read NO UNAUTHORISED ENTRY as a courtesy and it looks thin — anyone hostile enough to attempt this route was never going to be stopped by a sentence. Read it as the sentence a liability department required before deploying something capable of killing, and it does exactly what it was built to do: it moves responsibility from the party who built the trap to the party who ignored the sign. The plate doesn't protect the trespasser. It protects the installer — the same logic that puts a physical hazard light on a mast nobody's supposed to climb rather than relying on the height alone to keep people off it.

The typography carries the same logic

The size hierarchy isn't for drama. BLACK ICE ACTIVE is largest because it has to be legible from the distance a court would consider "adequate notice," and LETHAL COUNTERMEASURE sits a size down because it's the technical description a layperson is assumed to skim. The rule beneath separates the headline warning from the access restriction, the same division a real hazard placard makes between "what will happen" and "what you are not permitted to do about it."

Does a shirt need permission to invent a hazard placard like this?

No brand or standards body is being quoted, so there's nothing to license.

A real regulator's hazard pictograms, a specific certifying body's mark, or a genuine safety standard's exact wording are a different matter — those make a claim of official approval, and nobody licenses a shirt to assert that an authority signed off on it. This plate makes no such claim. It's an invented format doing what hazard signage generically does, and that generic administrative voice belongs to nobody in particular.

Does the same idea work for a warning that isn't lethal software defence?

Anywhere a sign exists mainly to protect the sign's author.

A construction hoarding disclaiming responsibility for a site nobody secured properly. A product label's fine print, sized to be technically present rather than actually read. Or the printed notice a patrol drone leaves after a stop, which does the same administrative work a plate like this does — proving something was disclosed, not preventing it. The mechanism is the same each time: the warning is evidence the danger was known, filed in a format designed to look like caution and function like a release form.

Isn't reading it this way too cynical — maybe it's just doing its job?

It can be both. A sign genuinely reduces some accidents and exists mainly for liability — those aren't in tension.

The interesting version keeps both readings live rather than picking one. A trespasser who sees BLACK ICE ACTIVE and turns back has been genuinely warned. The clause number sitting quietly in the corner is for the entirely separate audience that only shows up afterwards, asking who knew what, and when.

Does it print well?

Yes, provided the hierarchy stays exactly three steps and the yellow stays flat.

Black on safety yellow is the one palette this design keeps to throughout — it's the colour pairing that already means "hazard" before anyone reads a word, and a mixed palette dilutes exactly the recognition the sign is trading on. The clause number is small enough that it needs to be pure black with no attempt at a lighter weight — a greyed-down number goes soft on cotton and reads as a printing fault rather than a deliberate detail worth finding.

How do I get one made?

Describe the plate at JustOG — the wording, the type hierarchy, and what the clause number refers to. Pick a direction, drag the crop frame, see it composited on the real garment, and it's made to order and shipped.

Designs other people have published are in the shop.

Three lines of warning, one number in the corner, and a signature nowhere on the plate at all.