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A letter E in a circle with a country number, marking a type-approved part.
Also known as: E mark, ECE approval mark
An E in a circle followed by a number is a type-approval mark: it says a vehicle component has been approved against an international regulation, and the number identifies the approving country. A lower-case e in a rectangle is the parallel European Union marking. It appears on headlamps, tyres, mirrors, glazing, seat belts and helmets, and its absence on a part that should carry one is the usual sign of something not legal for road use.
Marks a component as type-approved against an international vehicle regulation, with the number beside the letter identifying the country that granted the approval.
Contexts: Road signage, Vehicle dashboard
Distinguishes two parallel schemes by case and shape: a capital E in a circle for the United Nations regulations and a lower-case e in a rectangle for the European Union directives, which cover overlapping but not identical ground.
Europe · Contexts: Road signage, Vehicle dashboard
Is what its absence says that matters most: a headlamp, a helmet or a pane of glazing without one is generally not legal for road use, whatever it is sold as.
Contexts: Road signage, Vehicle dashboard
A single capital letter enclosed in a circle, with one or two numerals printed immediately beside the circle.
Both are moulded into the same tyre sidewall.