The subject of the article's research is the peculiarities of prepositional-case constructions with the meaning of vehicle in children's monolingual speech, in the speech of Chinese students studying Russian as a foreign language and in the speech of heritage Russian speakers with different dominant languages. The study examines case constructions with the meaning of movement. The specificity of mastering grammatical construction in the course of mastering Russian as a native language, as one of the native languages, and as a foreign language is analyzed. The research material was experimental data collected in a children's classroom and in an adult foreign audience, as well as information from the “Russian Academic Corps /RLC” (Corpus of the Linguistic Laboratory for Corpus Technologies of the National Research University Higher School of Economics, containing information about the development of Russian as a foreign language and native speakers of Russian with different dominant languages). The research methodology included: longitudinal observation of the speech of monolingual children, psycholinguistic experiment in a foreign audience, corpus research method; comparative research, semantic and functional analysis. The scientific novelty of the proposed work lies in the fact that for the first time a comparative analysis of data is presented that describes the ways of mastering the case construction with the meaning of indicating transport by Russian-speaking children, Chinese students and heritage native speakers of the Russian language. Typical differences and errors in the choice of construction are considered, the strategy of simplification in the speech of foreign students is described, and the ways of grammatical interference are analyzed. Analysis of errors made by Russian-speaking children and adult foreigners allows us to draw conclusions about the specifics of mastering Russian case meanings. Errors in choosing a case ending with a correctly chosen preposition are often observed in the speech of foreign students and heritage speakers, but do not appear in children's speech. Thus, in the Russian language there is a wide variety of ways to indicate a vehicle. Choosing the correct construction when indicating transport represents a specific difficulty in the course of mastering Russian as a foreign language and requires special attention.