Assertion: ambulance | /r/HasProperty | compliant
Facets:
value: cen
type: OTHER
Source sentences:
text: they are coloured yellow as all ambulances in the EU have to be CEN compliant and therefore coloured "Euro Yellow RAL 1016" as it is apprently the most distinctive and highly visable colour for an ambulance, helping it to be noticed in rear view mirrors when blue lights may not be seen.