Commission Delegated Regulation (EU) 2021/1958
Commission Delegated Regulation (EU) 2021/1958 supplementing Regulation (EU) 2019/2144 by laying down detailed rules concerning the specific test procedures and technical requirements for the type-approval of motor vehicles with regard to their intelligent speed assistance systems
| Issuing body | EC |
|---|---|
| Committees | European Commission |
| First issued | 2021 |
| Latest revision | 2021 |
| Status | active |
| Category | regional |
| Topics | adas_effectiveness, auditory_warnings, multimodal_feedback, sign_visibility_legibility |
| Reference | https://eur-lex.europa.eu/eli/reg_del/2021/1958/oj/eng |
Scope
Sets the test procedures and technical requirements for intelligent speed assistance (ISA) under GSR2. An ISA system must comprise a speed limit information function (SLIF) plus either a speed limit warning function (SLWF) or a speed control function (SCF). Permits several driver-warning configurations — visual plus cascaded audible, visual plus cascaded haptic, or purely haptic. SLIF accuracy is verified by a 400 km on-road test across urban, non-urban and motorway roads, requiring correct speed-limit determination over at least 90% of the distance. The driver may always override or switch the system off.
Related Papers (20)
- A Holistic Inquiry of Intelligent Speed-Assist Technology: Safety Impacts, Technology Implementation, and Challenges · 2025 · paper relates to standard · 0.76 (embedding)
- Development of a Novel Intelligent Speed Adaptation System Based on Available Sight Distance · 2021 · paper relates to standard · 0.76 (embedding)
- A Holistic Inquiry of Intelligent Speed-Assist Technology: Safety Impacts, Technology Implementation, and Challenges [Research Brief] · 2023 · paper relates to standard · 0.75 (embedding)
- Improving speed behaviour: the potential of in-car speed assistance and speed limit credibility ↗ · 2008 · paper relates to standard · 0.72 (embedding)
- The effectiveness of an advisory Intelligent Speed Adaptation (ISA) system for Victorian repeat speeders ↗ · 2014 · paper relates to standard · 0.69 (embedding)
- Effects of Human–Machine Interface Design for Intelligent Speed Adaptation on Driving Behavior and Acceptance ↗ · 2005 · paper relates to standard · 0.69 (embedding)
- Evaluation of in-vehicle dynamic speed assistance in Spain: algorithm and driver behaviour ↗ · 2008 · paper relates to standard · 0.67 (embedding)
- Draft Research Test Procedure Performability Assessment for Five ADAS Variants · 2021 · paper relates to standard · 0.66 (embedding)
- FMVSS Considerations for Vehicles with Automated Driving Systems: Volume 2 · 2021 · paper relates to standard · 0.66 (embedding)
- FMVSS Considerations for Vehicles with Automated Driving Systems: Volume 1 · 2020 · paper relates to standard · 0.65 (embedding)
- The challenge of ADAS assessment: A scale for the assessment of the HMI of advanced driver assistance technology · 2018 · paper relates to standard · 0.65 (embedding)
- Intersection Safety Assist Draft Test Procedure Performability Validation · 2021 · paper relates to standard · 0.64 (embedding)
- Compendium Of Human Factors Projects Supporting The Intelligent Vehicle Initiative · 1999 · paper relates to standard · 0.64 (embedding)
- In-Vehicle Signing Functions of an In-Vehicle Information System · 1996 · paper relates to standard · 0.64 (embedding)
- Risk evaluation for in-vehicle sign information. · 2016 · paper relates to standard · 0.64 (embedding)
- Evaluating the Effectiveness of Visual and Auditory ADAS Alerts on Rural Roads Using a Driving Simulator · 2025 · paper relates to standard · 0.64 (embedding)
- System Capability Assessment of Cooperative Intersection Collision Avoidance System for Violations (CICAS-V) · 2011 · paper relates to standard · 0.64 (embedding)
- FMVSS Considerations for Vehicles with Automated Driving Systems: Volume 3 · 2025 · paper relates to standard · 0.63 (embedding)
- Preliminary Human Factors Review for the Intelligent Vehicle Initiative (Ivi) Program: Identification of Human Factors Research Needs · 1998 · paper relates to standard · 0.63 (embedding)
- Integrated Vehicle-Based Safety Systems (IVBSS): Phase I Interim Report · 2008 · paper relates to standard · 0.63 (embedding)