German In-Depth Accident Study: an ongoing project between BASt, the University of Hannover, and the Automotive Research Association (FAT). See http://www.gidas.org.

Informal Working Group: A group of experts authorized to develop proposals for consideration by WP.29 without being bound by formal UN rules of procedure.

Vulnerable Road User: A person using the road who lacks the protection of an outer vehicle shell or equivalent restraint system, and who is therefore at disproportionate risk of serious injury or death in a collision involving motorized traffic.