De ensartede forskrifter i regulativ nr. 55 vedrørende bestemmelser for godkendelse af komponenter til mekanisk sammenkobling af vogntog tilsigter at fjerne de tekniske hindringer for samhandelen med motorkøretøjer mellem de kontraherende parter og at opnå en høj grad af sikkerhed.
The standardised requirements of Regulation No 55 on provisions concerning the approval of mechanical coupling components of combinations of vehicles are intended to remove technical barriers to the trade in motor vehicles between the Contracting Parties and to ensure a high level of safety and protection in the operation of vehicles.