In the event of opposition lodged by the public prosecutor or the accused, the case shall be brought before the police court in the forms of ordinary procedure. The judgment rendered in absentia, on the opposition of the accused, is subject to opposition under the conditions provided for in articles 489 to 494-1.
Until the opening of the hearing, the accused may expressly waive his opposition. The criminal order then becomes enforceable again and a new opposition is inadmissible.