(16)In establishing and implementing measures promoting the participation of traders and consumers in the ADR procedures, Member States should pay particular attention to specific business sectors with low participation rates for traders in ADR procedures and to practices in those sectors about which consumers have repeatedly lodged complaints, as demonstrated by available data and complaint statistics. This is particularly the case in the transport and tourism sectors, especially in the field of air passengers’ rights. As an alternative to measures promoting the participation of traders in the ADR procedures in those sectors, Member States should be able to introduce the mandatory participation in ADR procedures of traders in those sectors.