Analysis of door opening warning systems (DOWS) fitted in 150 independently rated Euro NCAP models from 2023–2026. DOWS is offered in 87% of models (67% as standard, 19% as option), with 13% unavailable. Systems vary widely in capability, from information-only functions to door retention, with some not enabled by default. Harmonised minimum requirements aligned with the Euro NCAP dooring test would build on systems already on the market.

Door-opening collision accidents between motor vehicles and vulnerable road users occur frequently and pose serious risks to road traffic safety. No mandatory UN Regulation or Global Technical Regulation for Door Opening Warning Systems exists internationally, resulting in regional inconsistencies. A virtual kick-off workshop was held on 1 April with participation from contracting parties and stakeholders. The workshop reviewed accident data from Germany and China, discussed potential technical parameters for DOWS, and identified the need for broader international data collection. Further workshops are envisaged pending availability of substantive new input.