The 18th international conference Road Safety on Five Continents (RS5C) took place with great success in May 16-18, 2018 on Jeju Island, South Korea. The conference is organised by VTI in close cooperation with Korea Transportation Safety Authority (KOTSA). With focus on traffic safety and health, experts presented and discussed about hot topics and the latest research in the road transport area. By providing a mutual ground for sharing knowledge and a forum to discuss mutual problems and their solutions, researchers, officials and other stakeholders can learn from results, experiences and success stories.