This is not true for the EU. > 0,7 m/s² and ≤ 1,3 m/s² The signal may be generated. > 1,3 m/s² The signal shall be generated. https://eur-lex.europa.eu/eli/re

This is not true for the EU. > 0,7 m/s² and ≤ 1,3 m/s² The signal may be generated. > 1,3 m/s² The signal shall be generated. https://eur-lex.europa.eu/eli/reg/2015/2364/oj https://eur-lex.europa.eu/eli/reg/2015/2364/oj