In April 2014 the European Parliament approved the legislation (Regulation (EU) No 540/2014). It requires the Acoustic Vehicle Alerting Systems, which is mandatory for all new electric or hybrid electric vehicles. The new rule established a transitional period of 5 years after publication of the final approval of the April 2014 proposal to comply with the regulation

Regulation (EU) No 540/2014
Directive 2004/104/CE, amended by directive 2009/19/CE,