scope:

This Technical Specification (CEN/TS 16157-4:2014) specifies anddefines component facets supporting the exchange and shared use ofdata and information in the field of traffic and travel. Thecomponent facets include the framework and context for exchanges,the modelling approach, the data content, the data structure andrelationships and the communications specification. This TechnicalSpecification is applicable to:- Traffic and travel informationwhich is of relevance to road networks (non urban and urban); -Public transport information that is of direct relevance to the useof a road network (e. g. road link via train or ferry service).This Technical Specification establishes specifications for dataexchange between any two instances of the following actors; -Traffic Information Centres (TICs); - Traffic Control Centres(TCCs); - Service Providers (SPs). Use of this TechnicalSpecification may be applicable for use by other actors. ThisTechnical Specification includes the following types of informationcontent; - Road traffic event information - planned and unplannedoccurrences both on the road network and in the surroundingenvironment; - Operator initiated actions; - Road trafficmeasurement data, status data and travel time data; - Travelinformation relevant to road users, including weather andenvironmental information; - Road traffic management informationand instructions relating to use of the road network. This part ofthe CEN/TS 16157 series specifies the informational structures,relationships, roles, attributes and associated data types requiredfor publishing variable message sign information within the DatexII framework. This is specified in two parts, a DATEX II VMSPublication sub-model and a VMS Table Publication sub-model. TheVMS Publication supports the exchange of the graphic and textualcontent of one or several VMS plus any status information on deviceconfiguration that aid the comprehension of the informationalcontent. This content is potentially subject to rapid change. TheVMS Table Publication supports the occasional exchange of tablescontaining generally static reference information about deployedVMS which enable subsequent efficient references to be made topre-defined static information relating to those VMS. Thesepublications are not intended to support the control orconfiguration of VMS equipment. Each is part of the DATEX IIplatform independent model. Conformance The platform independentsub-models defined by this Part specify a DATEX II VMS Publicationand a DATEX II VMS Table Publication except for those elements thatrelate to location information which are specified in CEN/TS16157-2. The DATEX II platform independent data model of whichthese two publication sub-models are a part, corresponds to theLevel A model as defined in CEN/TS 16157-1.