CEN

The pace of innovation in AI methods, architectures and tools remains exceptionally high, driven by progress in data availability, computational capacity and algorithmic development. As a result, the professional landscape surrounding AI is in constant evolution: new roles, specialisations and skill requirements emerge, while others evolve, merge or decline in relative importance. 

This CEN Workshop Agreement (CWA) is intended to function as a living reference point: a common baseline that can support dialogue, alignment and comparability, while remaining open to revision as the AI field continues to mature and transform. Readers and users of this document are encouraged to interpret and apply it with this dynamic context in mind, recognising both its value as a shared framework and its limitations in a field defined by rapid and ongoing change. 

This CWA is partially based on the results of the Artificial Intelligence Skills Alliance (ARISA) project, funded under the Erasmus+ programme ‘Partnerships for Innovation; Alliances for Sectoral Cooperation on Skills’ of the European Commission.

This standard specifies a reference architecture for the execution of Local Digital Twins (LDTs) in European cities and communities. The architecture defines the essential components, interfaces, and data flows required to enable interoperable, AI-enabled digital twin solutions, supporting real-time integration of heterogeneous data sources, advanced analytics, and simulation capabilities.

The standard covers the logical and technical layers necessary for the deployment, operation, and federation of digital twins, including context management (e.g. using NGSI-LD), data models (e.g. using SAREF), AI/ML integration (with ethical considerations aligned to the EU AI Act), secure data exchange, and IoT device integration (e.g. via oneM2M standards). It ensures alignment with ongoing European initiatives such as CitiVerse EDIC, and Minimal Interoperability Mechanisms (MIMs/ITU-T Y.4505), while supporting compliance with relevant EU regulations and standards including the Interoperable Europe Act.

The architecture is designed to be extensible, supporting cross-domain use cases (such as mobility, energy and urban planning) and future technological advancements, exploring on-going standards developments for digital twins (e.g. in ISO/IEC, ITU-T, CEN/CENELEC). Implementation guidance will be provided to facilitate adoption by cities and ensure vendor-neutral solutions. 

This CEN Workshop Agreement has been drafted and approved by a Workshop of representatives of interested parties, the constitution of which is indicated in the foreword of this Workshop Agreement. The formal process followed by the Workshop in the development of this Workshop Agreement has been endorsed by the National Members of CEN but neither the National Members of CEN nor the CEN-CENELEC Management Centre can be held accountable for the technical content of this CEN Workshop Agreement or possible conflicts with standards or legislation. This CEN Workshop Agreement can in no way be held as being an official standard developed by CEN and its Members. This CEN Workshop Agreement is publicly available as a reference document from the CEN Members National Standard Bodies.

This document specifies the functionality of the Wallet Unit for Access Control to Wallet Held Assets (WHAs) i.e. personal data relating to the Wallet User and stored in the Wallet Unit. It defines the Wallet Access Control decision Engine (WACE) and the corresponding functional requirements, resulting in recommendations to the user on decision to be made. This document aims at: 1) describing and specifying an Access Control Model supporting access control to the various possible operations on WHA(s); 2) providing the definitions and classification of the various types of data and metadata, and supporting access control to the various possible operations on WHA(s) ; 3) describing and specifying a W ACE controlling the access to the various possible operations on WHA(s) and the notification returned by the Wallet Access Control Decision Engine to a Wallet Unit; 4) identifying requirements applicable to the Wallet Access Control Decision Engine; This document also: 

• identifies technical specifications and standards that can be used to support the concepts described herein;
• specifies additional requirements for the use of the identified specifications to meet the above objectives; 
• provides the missing technical specifications needed to meet the above objectives where needed; 

• provides examples and use cases; The Access Control Model and Wallet Access Control Decision Engine defined in this document aim to comply with the regulator requirements regarding access control. 

  The following areas are out of the scope of this document: 1) content and encoding of the policies assigned for the disclosure of WHA(s), 2) implementation choice and encoding of Wallet Held Access Control Metadata; 3) encoding of electronic attestation(s) of attributes which are in the remit of ETSI/TC ESI.

ISO 29481-2:2012 specifies a methodology and format for describing coordination acts' between actors in a building construction project during all life cycle stages. It therefore specifies a methodology that describes an interaction framework, an appropriate way to map responsibilities and interactions that provides a process context for information flow, a format in which the interaction framework should be specified. ISO 29481-2:2012 is intended to facilitate interoperability between software applications used in the construction process, to promote digital collaboration between actors in the building construction process, and to provide a basis for accurate, reliable, repeatable, and high-quality information exchange.

ISO 12006-3:2007 specifies a language-independent information model which can be used for the development of dictionaries used to store or provide information about construction works. It enables classification systems, information models, object models and process models to be referenced from within a common framework.

This standard specifies built-in safety measures aimed at preventing unexpected machine start-up (see 3.2) toallow safe human interventions in danger zones (see Annex A).This standard applies to unexpected start-up from all types of energy source, i.e.: Power supply, e.g. electrical, hydraulic, pneumatic.  Stored energy due to, e.g., gravity, compressed springs.  External influences, e.g. from wind;