The 6th International Expert Symposium on Accident Research (ESAR) took place in Hanover on 20-21 June 2014. ESAR is organised by the Medical School of Hanover, the University of Technology of Dresden and the Federal Highway Research Institute of Germany and it is a scientific colloquium which can be seen as a platform for exchanges of information on accident research issues. Representatives from authorities as well as from medical and technical institutions came together to discuss new research issues and exchange experiences on accident prevention and methodologies of accident reconstruction. The goal of ESAR was to give the opportunity to all kind of studies on Accident Investigation Methodologies, Accident Analysis, Active and Passive Safety, Injury mechanisms and Injury Prevention to an audience of experts from government, industry and other researchers from all parts of the world.