Vehicle markings
Hazard warning plates
8 markings, in the order the Highway Code lists them. Each one has a page of its own, so you can link to a single marking.
Every one, in the order the Code lists them
The panel illustrated is for flammable liquid. Diamond symbols indicating other risks include:
The above panel will be displayed by vehicles carrying certain dangerous goods in packages
Toxic substance
Oxidizing substance
Non-flammable compressed gas
Radioactive substance
Spontaneously combustible substance
Corrosive substanceWhat the Highway Code says about this group
Certain tank vehicles carrying dangerous goods must display hazard information panels
The rest of vehicle markings
3 more groupsOne search covers the whole Code and the whole library
Nobody looking something up knows whether the answer is a rule or a marking, so there is one field for both, and neither needs an account.