Status report on two workshops on Door Opening Warning Systems held virtually on 1 April 2026 and 2 September 2026. The first workshop presented accident data from Germany and China and conducted exploratory discussions on system parameters. The second workshop presented accident data from Germany, China, Belgium, the United Kingdom and France, and introduced draft regulatory text covering scope, definitions, signalling strategy, operational parameters, activation and deactivation, failure detection and test procedure. Comments were received from industry, cyclists’ organisations and Contracting Parties. The experts from China and Germany propose establishment of an informal working group on DOWS to develop proposals concerning justification and problem definition, scope and definitions, performance requirements, test and assessment procedures, and regulatory form.

Proposal to establish uniform provisions for type approval of vehicles of categories M₁ and N₁ equipped with a Door Opening Warning System (DOWS) intended to reduce the risk of collisions involving opening vehicle doors and approaching vulnerable road users. The system shall provide information signals indicating the presence of a dooring-related vulnerable road user in the detection area and door opening warning signals to alert occupants when a door opening attempt is initiated and collision risk is imminent. The Regulation specifies technical requirements including system availability, signalling requirements, failure indication, and test procedures for verification at type approval.

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.

Status report on two workshops on Door Opening Warning Systems held virtually on 1 April 2026 and 2 September 2026. The first workshop presented accident data from Germany and China and conducted exploratory discussions on system parameters. The second workshop presented accident data from Germany, China, Belgium, the United Kingdom and France, and introduced draft regulatory text covering scope, definitions, signalling strategy, operational parameters, activation and deactivation, failure detection and test procedure. Comments were received from industry, cyclists’ organisations and Contracting Parties. The experts from China and Germany propose establishment of an informal working group on DOWS to develop proposals concerning justification and problem definition, scope and definitions, performance requirements, test and assessment procedures, and regulatory form.

Proposal to establish uniform provisions for type approval of vehicles of categories M₁ and N₁ equipped with a Door Opening Warning System (DOWS) intended to reduce the risk of collisions involving opening vehicle doors and approaching vulnerable road users. The system shall provide information signals indicating the presence of a dooring-related vulnerable road user in the detection area and door opening warning signals to alert occupants when a door opening attempt is initiated and collision risk is imminent. The Regulation specifies technical requirements including system availability, signalling requirements, failure indication, and test procedures for verification at type approval.

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.

Status report on two workshops on Door Opening Warning Systems held virtually on 1 April 2026 and 2 September 2026. The first workshop presented accident data from Germany and China and conducted exploratory discussions on system parameters. The second workshop presented accident data from Germany, China, Belgium, the United Kingdom and France, and introduced draft regulatory text covering scope, definitions, signalling strategy, operational parameters, activation and deactivation, failure detection and test procedure. Comments were received from industry, cyclists’ organisations and Contracting Parties. The experts from China and Germany propose establishment of an informal working group on DOWS to develop proposals concerning justification and problem definition, scope and definitions, performance requirements, test and assessment procedures, and regulatory form.

Proposal to establish uniform provisions for type approval of vehicles of categories M₁ and N₁ equipped with a Door Opening Warning System (DOWS) intended to reduce the risk of collisions involving opening vehicle doors and approaching vulnerable road users. The system shall provide information signals indicating the presence of a dooring-related vulnerable road user in the detection area and door opening warning signals to alert occupants when a door opening attempt is initiated and collision risk is imminent. The Regulation specifies technical requirements including system availability, signalling requirements, failure indication, and test procedures for verification at type approval.

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.