The 1274 full papers and 209 posters presented at the HCII 2019 conferences were carefully reviewed and selected from 5029 submissions. The papers cover the entire field of human-computer interaction, addressing major advances in knowledge and effective use of computers in a variety of application areas. The papers in this volume are organized in the following topical sections: interaction in autonomous and semiautonomous vehicles; driving experience; and mobility and transport.