The present study focuses on the conversational styles of the aerial reporters on radio stations during the transmission of real-time news about the traffic flow in the city of Rio de Janeiro. The study aims to evaluate how the aerial reporters shift their styles depending on the audience and the situational context of traffic on a great city. The theoretical perspective lies on interactional sociolinguistics and its relation to the social accommodation theory and audience design, in micro and macro contexts. The discussion on the concept of conversational style is crucial, on the scope of the related theories. Other important concepts deal with speech activity and evaluation; framing, alignment, contextualization cues and discourse strategies. The research are characterized on the qualitative and interpretative investigation. The analysis is based on the recording of news about the traffic flow from four aerial reporters in six FM radio stations in Rio de Janeiro. The data were transcribed according to the conventions of conversation analysis and analyzed on the scope of talk-in-interaction from the aerial reporters and radio announcers focusing on the audience on traffic. The study shows that the same aerial reporters shift their conversational styles in different radios, performing different discourse types, varying from a low involvement interpersonal conversational informative style on some radio stations to a high involvement interpersonal conversational informative style on other radio stations.