In all the European countries the technical standard accepted by the government is the Regulation 22 of the Economic Commission for Europe (ECE) of the United Nations, in the most updated version (called the amendment), which currently is the fifth. This is the standard commonly referred as ECE 22-05. This standard requires that the visor mounted on the helmets is approved too. All other approvals, even valid or accepted somewhere else (such as DOT, Snell, JIS, …) are not accepted for public roads use within Europe.
The Regulation ECE 22 requires every helmet bears a label sewn on the retention system (i.e. on the chinstrap). This label bears the homologation mark, the homologation number and the production serial number.The homologation mark is an upper case E followed by a number, inscribed in a circle. The number following the upper case E represents the country who has granted the homologation. For instance E3 marks the helmets approved in Italy, E4 in Belgium, E1 in Germany, E6 in the Netherlands, etc. Below the E-mark there are two numbers: the left one is the homologation number assigned by the National Administrations, where the first two digits represent the series of amendments under which the model has been approved (04 represents the fourth, 05 the fifth, and so on); the right one is the production serial number. On the visor it is enough to see embossed the E-mark and the homologation number only.
During the transport may happen that the antiscratch and antifog treatments react causing this opaque effect, without however prejudging the quality of the visor. Remove therefore the visor and clean it with water and neutral soap.