scope:

This Technical Specification (CEN/TS 16157-3) 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). ThisTechnical 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 specifies the informational structures,relationships, roles, attributes and associated data types requiredfor publishing situation traffic and travel information within theDATEX II framework. This is specified as a DATEX II SituationPublication sub-model which is part of the DATEX II platformindependent model, but this Part excludes those elements thatrelate to location information which are specified in CEN/TS16157-2 and those elements that relate to VMS settings which arespecified in Part 4 of CEN/TS 16157 [4].