A receiving apparatus which is capable of receiving from a radio broadcast station a radio data system broadcast signal into which data is multiplexed, comprising: receiving means (110A, 110B) configured to receive the broadcast signal; identifying means configured to identify data included in the radio data system broadcast signal received by the receiving means (110A, 110B), the data comprising a plurality of first data groups including traffic information and a number of second data groups disposed between two successive first data groups; extracting means configured to extract traffic message channel data, TMC data, from the first data groups; determining means configured to determine whether the extracted TMC data has been correctly received if it complies with a determination condition corresponding to a transmission standard of the TMC data, wherein the determination condition includes a number of successive first data groups comprising identical traffic information; storage means configured to store therein a first deviation table in which relationships between contents of deviation from the transmission standard and associated processes to be performed are defined; searching means configured to search for a process corresponding to a content of deviation from the transmission standard from the first deviation table, when the determining means has determined that the extracted TMC data deviates from the transmission standard; and changing means configured to change the determination condition to a new determination condition in correspondence with the process corresponding to the content of deviation from the transmission standard searched by the searching means when the determining means has determined that the extracted TMC data deviates from the transmission standard; wherein the determining means is able to determine whether the extracted TMC data has been correctly received if it complies with the new determination condition; characterized in that the contents of deviation defined in the first deviation table includes deviations of the received number of successive first data groups comprising identical traffic information from the transmission standard; wherein the processes defined in the first deviation table comprise processes of changing to different deviation determination conditions in case the received number of successive first data groups comprising identical traffic information is less than three; and processes of shifting to reception from another radio broadcast station in case the received number of successive first data groups comprising identical traffic information is larger than three; and in that the receiving apparatus further comprises a controller configured for shifting the receiving means (110A, 110B) to reception from another broadcast station in correspondence with a process associated with the contents of deviation from the transmission standard. receiving means (110A, 110B) configured to receive the broadcast signal; identifying means configured to identify data included in the radio data system broadcast signal received by the receiving means (110A, 110B), the data comprising a plurality of first data groups including traffic information and a number of second data groups disposed between two successive first data groups; extracting means configured to extract traffic message channel data, TMC data, from the first data groups; determining means configured to determine whether the extracted TMC data has been correctly received if it complies with a determination condition corresponding to a transmission standard of the TMC data, wherein the determination condition includes a number of successive first data groups comprising identical traffic information; storage means configured to store therein a first deviation table in which relationships between contents of deviation from the transmission standard and associated processes to be performed are defined; searching means configured to search for a process corresponding to a content of deviation from the transmission standard from the first deviation table, when the determining means has determined that the extracted TMC data deviates from the transmission standard; and changing means configured to change the determination condition to a new determination condition in correspondence with the process corresponding to the content of deviation from the transmission standard searched by the searching means when the determining means has determined that the extracted TMC data deviates from the transmission standard; wherein the determining means is able to determine whether the extracted TMC data has been correctly received if it complies with the new determination condition; characterized in that the contents of deviation defined in the first deviation table includes deviations of the received number of successive first data groups comprising identical traffic information from the transmission standard; wherein the processes defined in the first deviation table comprise processes of changing to different deviation determination conditions in case the received number of successive first data groups comprising identical traffic information is less than three; and processes of shifting to reception from another radio broadcast station in case the received number of successive first data groups comprising identical traffic information is larger than three; and in that the receiving apparatus further comprises a controller configured for shifting the receiving means (110A, 110B) to reception from another broadcast station in correspondence with a process associated with the contents of deviation from the transmission standard.