CLCCR advocates the various interests of the trailer manufacturers and body builders and Non-captive OEM Bus & Coach builders from these European Countries such as Austria, Belgium, Finland, France, Germany, Italy, Netherlands, Norway, Poland, Portugal, Spain, Sweden, Turkey and United Kingdom.

Delegates from the national associations together with member companies meet twice a year at a plenary meeting to discuss and decide about political and economic issues. Statistical data is gathered from national associations and made available to CLCCR´s members. The special technical interests of the individual members are safeguarded by CLCCR´s Technical Committee (TC) and its working groups. There are working groups on GRVA (Automated/Autonomous and Connected Vehicles; former GRRF), ADR (transport of dangerous goods), TIR (transport under customs seal), ATP (transport of perishable foodstuffs), GRSG (General Safety, Bus & Coach), and reduction and monitoring of CO2 emissions for trailers and Buses & Coaches. CLCCR actively participates in several technical working groups of the European Commission (DG GROW; MVWG; DG MOVE; Road Worthiness; DG CLIMA; CO2 reduction and monitoring) and in the working groups GRVA, GRSG, GRE, ADR, TIR and ATP of the United Nations in Geneva.