This article is an attempt to indicate groups of lexical units omitted in bilingual Polish-Czech and Czech-Polish dictionaries. One of the groups is made up of the presented public notices i.e. warnings and bans constituting vital elements of the contemporary reality which they describe and provide language users with important information. The public notices analyzed in the article include fixed minitexts which are neglected in a bilingual dictionary and makes it impossible for a language user to find appropriate foreign counterparts. The article also contributes to the author’s considerations related to theoretical and practical issues connected with notation of public notices: methods of creating their dictionary entries, their graphical notation, application of relevant qualifiers, etc.