Against this background the requested European standards and European standardisation deliverables should provide consideration to the reuse, harmonisation or interface with existing reference data models, common data dictionaries and metadata structure requirements with a view to foster interoperability, consistency and continuity of services.
1.2.3.
Implementability
The Expert Group on urban ITS suggested looking for ways of supporting more flexible and less constrictive standardisation deliverable in addition to standards in order to better address ITS fast-moving technological environment.
Therefore the requested European standards and European standardisation deliverables should fit the needs of the various users, the diversity of cities, and be easily implementable.
This should include the following aspects as far as possible:
(1) legacy systems and existing protocols, cost-effective migration paths, business models and guidelines for procurers;
(2) special needs of consumers, businesses and operators, including small and medium-sized enterprises;
(3) executable and freely available guidance, code lists, datasets, tools and processes to facilitate operational implementation and conformance tests;
(4) data availability, access, quality, reliability and accuracy.
2. REQUIREMENTS TO STRENGTHEN COMPATIBILITY AND COHERENCE WITH EXISTING STANDARDS AND TECHNICAL SPECIFICATIONS
The coherence of existing European, international or other globally used standards shall be checked (i.e. taking into account the work not only of CEN, Cenelec and ETSI, but also DATEX II, UTMC, OTS, ISO, IEC, ITU, etc.), potential gaps shall be assessed and compatible or open solutions proposed, either with the intention of providing for harmonisation and enhancement of existing standards or development of new interoperable standards and other specifications where appropriate. The development of new standards and specifications needs to build on the existing ones and to identify architectural or connectivity requirements.
In the domain of public transport, and particularly with respect to multimodal information and smart ticketing, such a need for coherence will concern a broad set of standards and technical specifications, in particular: Transmodel(20), IFOPT(21), SIRI(22), NeTEx(23), IOPTA(24) and ISO(25).
In the domain of alternative fuel vehicles and infrastructure, any new standards and specifications should be made compatible and complementary to ETSI TS 101 556-3(26).
The adaptability of general standards to the urban environment also needs to be considered, and potentially further developed. It is notably the case of DATEX II(27) providing for the exchange of traffic related data, described through specific profiles. It appears as a pre-requisite for establishing interoperability and continuity of services between the urban and interurban environments or networks. Such task can be best performed by ensuring a close cooperation with the DATEX II Strategic Group and Technical Group.
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