The type of Hazchem label or Hazchem sign and it's
depend on the goods being carried, the type of vehicle and whether the
journey is national or international. The
ADR regulations define the Hazchem signs, but the
Carriage of Dangerous
regulations (CDG) lists many exemptions for carriage in the UK. To see
the CDG regulations click here.
The chemical hazard symbol or diamond used in the first example can be
found on the CLP labels page.