The National ITS Architecture FRAME Content to TOGAF Mapping project was commissioned by Austroads as a key project in stage 2 of the National ITS Architecture (NIA) development. The project purpose is to map the European ITS FRAMEwork architecture (FRAME) content into the National ITS Architecture (NIA) TOGAF model based on the findings of the previous NIA Initial Enabling work project. The Open Group Architecture Framework (TOGAF) is an industry standard enterprise architecture framework and development methodology. The high-level objectives of the project are to: • Validate the proposed FRAME to TOGAF mappings, confirming they are valid for all required FRAME content. • Map all FRAME content into the NIA repository as TOGAF compliant content which can then be made available to all NIA users, including State Road Authorities (SRAs) for use in ITS solution planning and design. SRAs have been the focus of the current NIA development work. • Identify impacts on and updates required to the NIA Roadmap The key findings of the project are that mappings identified during the previous Initial Enabling Work were found to be suitable except as follows: 1. The message flows and their associated data attributes that are modelled within FRAME are low level and relate more to the physical representation of system data and consequently don’t support mapping to conceptual data entity definitions. Further analysis of FRAME stores and messages is required to formulate NIA conceptual data entity definitions. 2. FRAME incorporates the concept of terminators, which are entities that provide or consume data flows. Further analysis of the FRAME content confirmed that terminators should be mapped to TOGAF Actors rather than the initial proposed Organisation Unit mapping. 3. The definition of Organisational Units in NIA will be done as an extension to the FRAME content, with initial stage 1 Organisation Unit definitions retained and provided as reference definitions in the NIA content. Agencies have the flexibility to leverage NIA Organisational Units, augment or replace them with agency specific definitions. Recommendations The project has made seven recommendations: Recommendation 1 : Austroads to establish a stage 3 project which undertakes analysis of FRAME data stores and messages to define NIA data entity extensions. The Project Working Group should consist of SRA representatives that can ensure consensus is reached on the NIA conceptual data entities. Recommendation 2 : Austroads to establish a stage 3 project which undertakes analysis of ITS Organisation structures and governance and provide a common reference set of Organisational Unit definitions in NIA. This process should include collaboration with the SRAs and other stakeholders where applicable to ensure common Organisational Units can be identified and modelled in NIA. Recommendation 3 : Generation of future NIA content should consider the implications of using special characters that may be significant in content export formats and use alternatives where possible. Recommendation 4 : Austroads to revise the NIA roadmap to incorporate future NIA development modules based on new Business Architecture, Information Systems Architecture and Technology Architecture projects. Current modules for establishing NIA Governance should be retained. Recommendation 5 : Austroads to ensure that NIA content export and release processes incorporate appropriate versioning and change information to ensure content consumers can customise NIA content locally and still benefit from future NIA content updates. Recommendation 6 : Austroads to establish and undertake NIA governance processes which provide an effective mechanism to consider content additions and updates to NIA. Recommendation 7 : Austroads should establish a joint working relationship with FRAME-NEXT project to collaborate on future NIA and FRAME development stages, to minimise content divergence and provide mutual benefit to both architectures. This should be established quickly to align with the current FRAME-NEXT project activity with formal governance mechanisms defined as part of the establishment of the NIA Governance processes. Based on the recommendations from the project working group, there are several actions for consideration by Austroads and SRAs. Austroads actions: • Establishment of projects for subsequent stages of the NIAF Roadmap, with a focus on extending the mapped FRAME content with Business, Information Systems and Technology Architecture models. • Establishment of appropriate governance processes that enable agencies to adopt NIA content and provide feedback and updates for incorporation into NIA. • Establishment of a joint working relationship with FRAME-NEXT project to enable ongoing collaboration with the FRAME project teams and to optimise the ongoing development of both NIA and FRAME. State Road Authority actions: • Establishment of processes to leverage NIA content in agency architectures. The timing of this will be determined by the availability of pertinent NIA content including that which will be developed by future NIA roadmap projects. • Engagement in further roadmap projects with appropriate operations and architecture resources to support the effective development of NIA Business, Information Systems and Technology architecture extensions to the initial FRAME content. It is important that these content extensions are ratified nationally and have agency acceptance. (Author/publisher)
Samenvatting