The 7:00 PM hour slot occupied by
A Voz do Brasil and its mandatory broadcast (except on weekends and holidays) have caused friction with commercial broadcasters. These broadcasters consider that the program has lost relevance over the years with the rise of other media; as early as 1968, most Brazilians regarded its time slot as "the hour of silence". In addition,
A Voz do Brasil runs during the evening rush hour in many large cities, so stations cannot present traffic information or news updates during the program. After Rádio Eldorado in São Paulo could not interrupt the program to inform listeners of a major traffic accident in 1995, it began a multi-year court fight that included a favorable ruling in 1998. Some stations have held preliminary injunctions that allowed them to run the program in the early morning. Rádio
Jovem Pan in Paraná ran the program at 5:00 AM for more than 12 years until its authorization to do so was revoked in January 2012, though the station still refused to transmit
A Voz do Brasil in its habitual 7:00 PM timeslot. Additionally, the Paraná Broadcasters' Association held a general injunction, applicable to all stations in the state, from 2008 to 2009. From 2006 to 2010, stations in
Rio Grande do Sul also could move the program thanks to an injunction obtained by that state's broadcasters association;
Grupo RBS stations continued carrying alternative programming on Internet streams and pay television even after the
Supreme Federal Court closed the door to timeshifting of the program. In
São Paulo, Rádio Metropolitana Paulista was sanctioned with a mandatory one-day suspension of programming in 2013 for not taking
A Voz do Brasil in its normal timeslot. While attempts at allowing stations more latitude in when they carry the program have been debated in the Chamber of Deputies, so-called "flexibilization" policies have been enacted on special occasions of national interest, responding to petitions from the
Brazilian Association of Radio and Television Stations (ABERT) and state broadcasters' associations. On Thursday, 12 June 2014,
Dilma Rousseff enacted a provisional measure allowing stations to carry the program between 7:00 PM and 10:00 PM, regardless of whether they were carrying matches of the
2014 FIFA World Cup.
Michel Temer authorized an identical measure during the
2016 Summer Olympics and
2016 Summer Paralympics. Finally, on Wednesday, 4 April 2018, Temer signed the Federal Law Number 13.644, allowing this measure permanently for all stations except educational stations and legislative stations when the respective legislatures are not in session. The negative reputation of
A Voz do Brasil inspired a feature in the mobile app of radio station Paradiso FM, which broadcasts to
Rio de Janeiro. If the app detects that the user is driving above the speed limit, it imposes a "sound penalty" and subjects the user to one minute of the program, which a station spokesman describes as "a nightmare for all Brazilians". ==See also==