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2. Motorcycle helmet - Wikipedia

   en.wikipedia.org/wiki/Motorcycle_helmet

   The Snell Memorial Foundation recently certified a flip-up helmet for the first time. [17] [18] ECE 22.05 allows certification of modular helmets with or without chin bar tests, distinguished by -P (protective lower face cover) and -NP (non-protective) suffixes to the certification number, [19] and additional warning text for non-certified chin ...

3. Arai Helmet - Wikipedia

   en.wikipedia.org/wiki/Arai_Helmet

   And so 22-06 tests incorporate impacts against an anvil with a 45-degree angle. Extra sensors measure the twisting forces transmitted through the helmet to the rider's head. It was expected that under this particular test, rounder, smoother shells would perform better, and the first helmet to pass the new ECE 22.06 test was an Arai: the Quantic ...

4. Moped - Wikipedia

   en.wikipedia.org/wiki/Moped

   In Austria, a moped is defined as a motorized bicycle with at most 50 cc (3.1 cu in) and a maximum speed of 45 km/h (28 mph), which is close to the speed limit within towns (50 km/h (31 mph)). Since September 2009, drivers of mopeds have to be at least 15 years of age and in possession of a moped pass or a regular driver's license.

5. Group 12 element - Wikipedia

   en.wikipedia.org/wiki/Group_12_element

   Group 12, by modern IUPAC numbering, [1] is a group of chemical elements in the periodic table. It includes zinc (Zn), cadmium (Cd), mercury (Hg), [ 2 ] [ 3 ] [ 4 ] and copernicium (Cn). [ 5 ] Formerly this group was named IIB (pronounced as "group two B", as the "II" is a Roman numeral ) by CAS and old IUPAC system.