The present invention relates to a registration sign for vehicles, where the registration sign (2) comprises a sign package (38) consisting of individual plastic film sections (6a, 9a), a bottom sheet (18) and a front panel (12), and also comprises a frame (21) which surrounds the sign package. According to the invention, the registration sign (2) comprises in addition at least one transponder (50) for receiving and/or transmitting radio signals and the transponder (50) is embedded in the frame (21). The present invention also relates to a method for the manufacture of a registration sign whereby at least one transponder (50) is fastened on and/or in the sign package (38) for the registration sign (2) and the transponder 50 is embedded in the frame (21) when the latter is injection-molded round the edges of the sign package (38).