Supplementary positional information which details carriageway and lane locations. Several instances may exist where the element being described extends over more than one carriageway. Indicates the section of carriageway to which the location relates. Indicates the specific lane to which the location relates. This indicates the length of road measured in metres affected by the associated traffic element. The direction of traffic flow along the road to which the information relates. The direction of traffic flow to which the situation, traffic data or information is related. Positive is in the direction of coding of the road. ALERT-C name of a direction e.g. Brussels -> Lille. Indicates for circular routes (i.e. valid only for ring roads) the sense in which navigation should be made from the primary location to the secondary location, to avoid ambiguity. TRUE indicates positive RDS direction, i.e. direction of coding of road. The direction of traffic flow concerned by a situation or traffic data. In ALERT-C the positive (resp. negative) direction corresponds to the positive offset direction within the RDS location table. Indicates that both directions of traffic flow are affected by the situation or relate to the traffic data. The direction of traffic flow concerned by a situation or traffic data. In ALERT-C the negative direction corresponds to the negative offset direction within the RDS location table. The direction of traffic flow concerned by a situation or traffic data. In ALERT-C the positive direction corresponds to the positive offset direction within the RDS location table. A linear section along a road defined between two points on the road by reference to a pre-defined ALERT-C location table. EBU country code. Number allocated to an ALERT-C table in a country. Ref. EN ISO 14819-3 for the allocation of a location table number. Version number associated with an ALERT-C table reference. Identification of a specific point, linear or area location in an ALERT-C location table. Name of ALERT-C location. Unique code within the ALERT-C location table which identifies the specific point, linear or area location. A positive integer number (between 1 and 63,487) which uniquely identifies a pre-defined Alert C location defined within an Alert-C table. A linear section along a road between two points, Primary and Secondary, which are pre-defined ALERT-C locations plus offset distance. Direction is FROM the Secondary point TO the Primary point, i.e. the Primary point is downstream of the Secondary point. A single point on the road network defined by reference to a point in a pre-defined ALERT-C location table plus an offset distance and which has an associated direction of traffic flow. The point (called Primary point) which is either a single point or at the downstream end of a linear road section. The point is specified by a reference to a point in a pre-defined ALERT-C location table plus a non-negative offset distance. The point (called Secondary point) which is at the upstream end of a linear road section. The point is specified by a reference to a point in a pre-defined Alert-C location table plus a non-negative offset distance. A single point on the road network defined by reference to a pre-defined ALERT-C location table and which has an associated direction of traffic flow. EBU country code. Number allocated to an ALERT-C table in a country. Ref. EN ISO 14819-3 for the allocation of a location table number. Version number associated with an ALERT-C table reference. An integer number representing an angle in whole degrees between 0 and 359. Boolean has the value space required to support the mathematical concept of binary-valued logic: {true, false}. List of descriptors identifying specific carriageway details. On the connecting carriageway. On the entry slip road. On the exit slip road. On the main carriageway. On the opposite carriageway. On the adjacent parallel carriageway. On the slip roads. Contains details of the cause of a record within a situation A free text comment with an optional date/time stamp that can be used by the operator to convey un-coded observations/information. A free text comment that can be used by the operator to convey un-coded observations/information. The date/time at which the comment was made. An extension for Comment class. Type of comment in addition to existing types. Addtional types of comments. A name of these roadworks. The type of roadworks. An addtional restriction. A restriction for heay duty transports. An addtional traffic information. A route recommendation. Types of compliance. Advisory compliance. Mandatory compliance. Values of confidentiality. For internal use only of the recipient organisation. No restriction on usage. Restricted for use only by authorities. Roadworks involving the construction of new infrastructure. The type of construction work being performed. Types of works relating to construction. Construction work of a general nature at the specified location. Construction work associated with improvements to the road or its layout or with it upgrading. Road widening work at the specified location. List of countries. Austria Belgium Bulgaria Switzerland Serbia and Montenegro Cyprus Czech Republic Germany Denmark Estonia Spain Finland Faroe Islands France Great Britain Guernsey Gibraltar Greece Croatia Hungary Ireland Isle Of Man Iceland Italy Jersey Lichtenstein Lithuania Luxembourg Latvia Morocco Monaco Macedonia Malta Netherlands Norway Poland Portugal Romania Sweden Slovenia Slovakia San Marino Turkey Vatican City State Other than as defined in this enumeration. The DATEX II logical model comprising exchange, content payload and management sub-models. A combination of integer-valued year, month, day, hour, minute properties, a decimal-valued second property and a time zone property from which it is possible to determine the local time, the equivalent UTC time and the time zone offset from UTC. Days of the week. Monday. Tuesday. Wednesday. Thursday. Friday. Saturday. Sunday. Specification of periods defined by the intersection of days, weeks and months. Applicable day of the week. "All days of the week" is expressed by non-inclusion of this attribute. Applicable week of the month (1 to 5). "All weeks of the month" is expressed by non-inclusion of this attribute. Applicable month of the year. "All months of the year" is expressed by non-inclusion of this attribute. Distance of a point along a linear element either measured from the start node or a defined referent on that linear element, where the start node is relative to the element definition rather than the direction of traffic flow. Distance of a point along a linear element measured from a "from referent" on the linear element, in the sense relative to the linear element definition rather than the direction of traffic flow or optionally towards a "towards referent". A measure of distance along a linear element. A known location along the linear element from which the distanceAlong is measured, termed the "fromReferent" in ISO 19148. A known location along the linear element towards which the distanceAlong is measured, termed the "towardsReferent" in ISO 19148. Distance of a point along a linear element measured from the start node of the linear element, where start node is relative to the element definition rather than the direction of traffic flow. A measure of distance along a linear element. Details associated with the management of the exchange between the supplier and the client. Indicator that this exchange is due to "keep alive" functionality. The type of the response that the supplier is returning to the requesting client. Unique identifier of the client's subscription with the supplier. A floating point number whose value space consists of the values m × 2^e, where m is an integer whose absolute value is less than 2^24, and e is an integer between -149 and 104, inclusive. LineString, modelled on the definition in GML (ISO 19136): a curve which is defined by a series of two or more coordinate tuples. Specifies the Coordinate Reference System (CRS) used to interpret the coordinates in this GmlLineString List of coordinate pairs that define the geometry of this GmlLineString. There must be at least 2 pairs of coordinates. List of coordinates, space-separated, within the same coordinate reference system, defining a geometric entity. Modelled on DirectPositionListType in GML (ISO 19136), but constrained to represent a 2D polyline, so coordinates shall be in pairs. One or more physically separate locations. Multiple locations may be related, as in an itinerary (or route), or may be unrelated. It is not for identifying the same physical location using different Location objects for different referencing systems. Describes the status of the hard shoulder. The hard shoulder is available for driving. The hard shoulder is available for stopping. The hard shoulder is closed. Management information relating to the data contained within a publication. The extent to which the related information may be circulated, according to the recipient type. Recipients must comply with this confidentiality statement. The status of the related information (real, test, exercise ....). An assessment of the impact that an event or operator action defined by the situation record has on the driving conditions. The ratio of current capacity to the normal (free flow) road capacity in the defined direction, expressed as a percentage. Capacity is the maximum number of vehicles that can pass a specified point on the road, in unit time given the specified conditions. The number of normally usable lanes on the carriageway which are now restricted either fully or partially (this may include the hard shoulder if it is normally available for operational use, e.g. in hard shoulder running schemes). The normal number of usable lanes in the specified direction that the carriageway has before reduction due to roadworks or traffic events. The total width of the combined operational lanes in the specified direction. More attributes for impact: residualHeight, Indication whether there are lanes restricted (closed) or not. Position of closed lanes (contains only closed driving lanes. The operational status of a hard shoulder is coded with the element harShoulderStatus). The status of the hard shoulder. A coded value which gives information about open and closed lanes. Using this value needs an agreement about it's specific coding. It's not intended for textual representation. The maximum total height (max. value for vehicles). If there are differences between the lanes, this value is the maximum of all available max height values (e.g. a vehicle of this height can pass) Status of the related information (i.e. real, test or exercise). The information is real. It is not a test or exercise. The information is part of an exercise which includes tests of associated technical subsystems. The information is part of a test for checking the exchange of this type of information. An identifier/name whose range is specific to the particular country. ISO 3166-1 two character country code. Identifier or name unique within the specified country. Multiple (i.e. more than one) physically separate locations arranged as an ordered set that defines an itinerary or route. Multiple physically separate locations arranged as an ordered set that defines an itinerary or route. The index qualifier indicates the order. A location contained in an itinerary (i.e. an ordered set of locations defining a route or itinerary). A measure of speed defined in kilometres per hour. List of descriptors identifying specific lanes. In all lanes of the carriageway. On the hard shoulder. In the first lane numbered from nearest the hard shoulder to central median. In the second lane numbered from nearest the hard shoulder to central median. In the third lane numbered from nearest the hard shoulder to central median. In the fourth lane numbered from nearest the hard shoulder to central median. In the fifth lane numbered from nearest the hard shoulder to central median. In the sixth lane numbered from nearest the hard shoulder to central median. In the seventh lane numbered from nearest the hard shoulder to central median. In the eighth lane numbered from nearest the hard shoulder to central median. In the ninth lane numbered from nearest the hard shoulder to central median. In the left lane. In the right lane. A lane that is restricted by a maximum vehicle weight. Note that it is possible to use the literal "allLanesCompleteCarriageway" to specifiy a general restriction for the complete carriageway. Indicates the specific lane to which the location relates. The maximum weight for vehicles that are allowed on the specified lane. The minimum width of the specified lane. A language datatype, identifies a specified language by an ISO 639-1 2-alpha / ISO 639-2 3-alpha code. A linear section along a single road with optional directionality defined between two points on the same road. A linear element along a single linear object, consistent with ISO 19148 definitions. Name of the road of which the linear element forms a part. Identifier/number of the road of which the linear element forms a part. The identifier of a road network reference model which segments the road network according to specific business rules. The version of the identified road network reference model. Extension class for Linear. Directions of traffic flow relative to the direction in which the linear element is defined. Indicates that both directions of traffic flow are affected by the situation or relate to the traffic data. Indicates that the direction of traffic flow affected by the situation or related to the traffic data is in the opposite sense to the direction in which the linear element is defined. Indicates that the direction of traffic flow affected by the situation or related to the traffic data is in the same sense as the direction in which the linear element is defined. A linear section along a linear element where the linear element is either a part of or the whole of a linear object (i.e. a road), consistent with ISO 19148 definitions. The direction of traffic flow on the linear section relative to the direction in which the linear element is defined. A point on the linear element that defines the start node of the linear section. A point on the linear element that defines the end node of the linear section. The specification of a location either on a network (as a point or a linear location) or as an area. This may be provided in one or more referencing systems. A location which may be used by clients for visual display on user interfaces. A character string with no specified length limit, whose value space is the set of finite-length sequences of characters. Every character has a corresponding Universal Character Set code point (as defined in ISO/IEC 10646), which is an integer. Roadworks involving the maintenance or installation of infrastructure. The type of road maintenance or installation work at the specified location. A cause of this situation record which is managed by the publication creator, i.e. one which is represented by another situation record produced by the same publication creator. A reference to another situation record produced by the same publication creator which defines a cause of the event defined here. A measure of distance defined in metres in a floating point format. A measure of distance defined in metres in a non negative integer format. An indication of whether the associated instance of a SituationRecord is mobile (e.g. a march or parade moving along a road) or stationary. An indication of whether the associated instance of a SituationRecord is mobile (e.g. a march or parade moving along a road) or stationary. Types of mobility relating to a situation element defined by a SituationReord. The described element of a situation is moving. The described element of a situation is stationary. The mobility of the described element of a situation is unknown. A list of the months of the year. The month of January. The month of February. The month of March. The month of April. The month of May. The month of June. The month of July. The month of August. The month of September. The month of October. The month of November. The month of December. The specification of a location on a network (as a point or a linear location). Network management action which is applicable to the road network and its users. Defines whether the network management instruction or the control resulting from a network management action is advisory or mandatory. A cause of this situation record which is not managed by the publication creator, i.e. one which is not represented by another situation record produced by the same publication creator. Description of a cause which is not managed by the publication creator (e.g. an off network cause). An integer number whose value space is the set {0, 1, 2, ..., 2147483645, 2147483646, 2147483647}. A group of (i.e. more than one) physically separate locations which have no specific order and where each location is explicitly listed. A location contained in a non ordered group of locations. Multiple (i.e. more than one) physically separate locations which have no specific order. The non negative offset distance from the ALERT-C referenced point to the actual point. The non negative offset distance from the ALERT-C referenced point to the actual point. The ALERT-C locations in the Primary and Secondary locations must always encompass the linear section being specified, thus Offset Distance is towards the other point. Base class used to hold data about a reference point. Holds common data that are used both in OpenlrPointAccessPoint and OpenlrPointAlongLine. Side of road Orientation The positive offset along the line of the location. Extension class for OpenLR Line location reference The direction of traffic flow on the linear section relative to the direction in which the linear element is defined. First OpenLR reference in first/main direction. If both direction, this is tha reference in the opposite direction against firstDirection. Extension class for OpenLR point. Enumeration of for of way undefined motorway multipleCarrigeway single carrigeway roadabout sliproad traffic square other Enemuration of functional road class Main road, highest importance First class road Second class road Third class road Fourth class road Fifth class road Sixth class road Other class road, lowest importance A geo-coordinate pair is a position in a map defined by its longitude and latitude coordinate values. The sequence of location reference points is terminated by a last location reference point. Line attributes are part of a location reference point and consists of functional road class (FRC),form of way (FOW) and bearing (BEAR) data. The functional road class (FRC) can hold eight different values as described in the logical format. The form of way (FOW) can hold eight different values as described in the logical format. defines the bearing field as an integer value between 0 and 360 whereby “0” is included and “360” is excluded from that range. A LineLocationReference is defined by an ordered sequence of location reference points and a terminating last location reference point. The basis of a location reference is a sequence of location reference points (LRPs). Offsets are used to locate the start and end of a location more precisely than bounding to the nodes in a network. The positive offset along the line of the location. The negative offset along the line of the location. Enumeration of side of road No orientation or unknown With line direction Against line direction Both directions The field path attributes is part of a location reference point (except for the last location reference point) and consists of lowest functional road class (LFRCNP) and distance to next point (DNP) data. The lowest FRC to the next point indicates the lowest functional road class used in the location reference path to the next LR-point. The DNP attribute measures the distance in meters between two consecutive LR-points along the location reference path as described in the logical format. Point along a line A point location is a zero-dimensional element in a map that specifies a geometric location. Point along line with access is a point location which is defined by a line,an offset value and a coordinate. The coordinate of the actual point of interest Enumeration of side of road On road or unknown right left both Modes of operation of the exchange. "Subscription Management Mechanism" - a specialized operating mode to handle subscriptions. "Publisher Push on Occurrence" operating mode. "Publisher Push Periodic" operating mode. "Client Pull" operating mode. Actions that a traffic operator can decide to implement to prevent or help correct dangerous or poor driving conditions, including maintenance of the road infrastructure. The identifier of the traffic management action plan to which this action relates. The status of the defined operator action. Extension class for OperatorAction. The speed limit that covers the longest distance within the road works zone (i.e. there might be higher as well as lower speed limits in this roadworks zone, but for lower distances). The minimum speed limit within the roadworks zone (i.e. there might be segments with a higher speed limit). List of statuses associated with operator actions. A request, either internal or external, has been received to implement an action. It has neither been approved nor has any activity yet been undertaken to implement the action. The action has been approved by the recipient of the request but activity to implement the action has not yet commenced. The action is in the process of being implemented. The action is fully implemented. The action has been rejected by the recipient of the request and hence is not implemented. A request, either internal or external, has been received to terminate the action, but activity to terminate the action has not yet commenced. The action is in the process of being terminated either because the action has reached the end of its validity period or because new circumstances have arisen and its termination has been requested, e.g. because of a traffic jam on the alternative route. A continuous or discontinuous period of validity defined by overall bounding start and end times and the possible intersection of valid periods (potentially recurring) with the complement of exception periods (also potentially recurring). Start of bounding period of validity defined by date and time. End of bounding period of validity defined by date and time. A single time period, a recurring time period or a set of different recurring time periods during which validity is true. A single time period, a recurring time period or a set of different recurring time periods during which validity is false. A payload publication of traffic related information or associated management information created at a specific point in time that can be exchanged via a DATEX II interface. Date/time at which the payload publication was created. The default language used throughout the payload publication. A measure of percentage. A continuous time period or a set of discontinuous time periods defined by the intersection of a set of criteria all within an overall delimiting interval. Start of period. End of a period. The name of the period. A recurring period of a day. A recurring period defined in terms of days of the week, weeks of the month and months of the year. A single geospatial point. A point on a linear element where the linear element is either a part of or the whole of a linear object (i.e. a road), consistent with ISO 19148 definitions. The direction of traffic flow at the specified point relative to the direction in which the linear element is defined. A single point defined only by a coordinate set with an optional bearing direction. A bearing at the point measured in degrees (0 - 359). Unless otherwise specified the reference direction corresponding to 0 degrees is North. A pair of coordinates defining the geodetic position of a single point using the European Terrestrial Reference System 1989 (ETRS89). Latitude in decimal degrees using the European Terrestrial Reference System 1989 (ETRS89). Longitude in decimal degrees using the European Terrestrial Reference System 1989 (ETRS89). Levels of confidence that the sender has in the information, ordered {certain, probable, risk of}. The source is completely certain of the occurrence of the situation record version content. A referent on a linear object that has a known location such as a node, a reference marker (e.g. a markerpost), an intersection etc. The identifier of the referent, unique on the specified linear element (i.e. road or part of). The type of the referent. A set of types of known points along a linear object such as a road. A marker which is usually but not necessarily physical that is one of a sequence which are spaced out along the linear object (road) to provide a location reference. The spacing of markers is not necessarily even. Types of response that a supplier can return to a requesting client. An acknowledgement that the supplier has received and complied with the client's request. A notification that the supplier has denied the client's request for a data. A notification that the supplier has denied the client's request for a subscription. Road information. The direction of traffic flow on the linear section relative to the direction in which the linear element is defined. Direction of the road in terms of origin and destination (e.g. Aachen - Köln). Identifier/number of the road of which the linear element forms a part. Types of road maintenance. Clearance work of an unspecified nature. Installation of new equipments or systems on or along-side the roadway. Maintenance of road, associated infrastructure or equipments. Works which are overhead of the carriageway. Repair work to road, associated infrastructure or equipments. Work associated with relaying or renewal of worn-out road surface (pavement). Striping and repainting of road markings, plus placement or replacement of reflecting studs (cats' eyes). Road side work of an unspecified nature. Road maintenance or improvement activity of an unspecified nature which may potentially cause traffic disruption. Sweeping of the roadway. Tree and vegetation cutting work adjacent to the roadway. Other than as defined in this enumeration. Road, carriageway or lane management action that is instigated by the network/road operator. Type of road, carriageway or lane management action instigated by operator. Management actions relating to road, carriageway or lane usage. Carriageway closures are in operation at the specified location. Lane deviations are in operation at the specified location. A new layout of lanes/carriageway has been implemented associated with roadworks. The road is closed to vehicles with the specified characteristics or all, if none defined, in the specified direction. Other than as defined in this enumeration. Highway maintenance, installation and construction activities that may potentially affect traffic operations. Indicates in general terms the expected duration of the roadworks. Indication of whether the roadworks are considered to be urgent whereby emergency work is being, or needs to be, undertaken to mitigate safety concerns. 'True' indicates they are urgent. Expected durations of roadworks in general terms. The roadworks are expected to last for a long term ( duration > 6 months) The roadworks are expected to last for a short term ( duration < = 1 month) RoadworksExtension An internal identifier for the roadworks. A coded value to represent the road layout. Using this value needs an agreement about its specific coding. Levels of severity of a situation as whole assessed by the impact that the situation may have on traffic flow as perceived by the supplier. Perceived by supplier as being of a high level. Perceived by supplier as being of a medium level. Perceived by supplier as being of a low level. Perceived by supplier as having a severity rating of none. Perceived by supplier as being of an unknown level. An identifiable instance of a traffic/travel situation comprising one or more traffic/travel circumstances which are linked by one or more causal relationships. Each traffic/travel circumstance is represented by a Situation Record. The overall assessment of the impact (in terms of severity) that the situation as a whole is having, or will have, on the traffic flow as perceived by the supplier. A reference to a related situation via its unique identifier. The date/time that this current version of the Situation was written into the database of the supplier which is involved in the data exchange. Identity and version of the situation are defined by the class stereotype implementation. Adds the role 'overallSituation'. A publication containing zero or more traffic/travel situations. An identifiable versioned instance of a single record/element within a situation. The date/time that the SituationRecord object (the first version of the record) was created by the original supplier. The date/time that this current version of the SituationRecord within the situation was written into the database of the supplier which is involved in the data exchange. Identity and version of record are defined by the class stereotype implementation. An assessment of the degree of likelihood that the reported event will occur. The assessment of the impact (in terms of severity) that this element of the situation is having, or will have, on the traffic flow as perceived by the supplier. A comment which may be freely distributed to the general public A comment which should not be distributed to the general public. Speed management action that is instigated by the network/road operator. Type of speed management action instigated by operator. Temporary limit defining the maximum advisory or mandatory speed of vehicles. Management actions relating to speed. Automatic speed control measures are in place at the specified location, whereby speed limits are set by an automatic system which is triggered by traffic sensing equipment. Do not slow down unnecessarily. Observe speed limit. Police speed checks are in operation. Reduce your speed. A speed restriction is in operation. Other than as defined in this enumeration. A character string whose value space is the set of finite-length sequences of characters. Every character has a corresponding Universal Character Set code point (as defined in ISO/IEC 10646), which is an integer. The subjects with which the roadworks are associated. The subject type of the roadworks (i.e. on what the construction or maintenance work is being performed). Subject types of construction or maintenance work. Bridge on, over or under the highway. Buried cables under or along the highway. Unspecified buried services on, under or along the highway. Crash barrier. Gantry over or above the roadway. Motorway or major road interchange. Motorway or major road junction. Installations along the roadway designed to reduce road noise in the surrounding environment. Road. Roadside drains. Road signs. Road tunnel. Other than as defined in this enumeration. This item contains all information relating to a customer subscription. The mode of operation of the exchange. Gives the date/time at which the subscription becomes active. The current state of the the client's subscription. The type of updates of situations requested by the client. The state of a client's current subscription. The client's subscription as registered with a supplier is currently active. The client's subscription as registered with a supplier is currently suspended. A collection of supplementary positional information which improves the precision of the location. The sequential number of an exit/entrance ramp from a given location in a given direction (normally used to indicate a specific exit/entrance in a complex junction/intersection). The details of a DATEX II target client. The IP address of a DATEX II target client. The exchange protocol used between the supplier and the client. An instant of time that recurs every day. The value space of time is the space of time of day values as defined in § 5.3 of [ISO 8601]. Specifically, it is a set of zero-duration daily time instances. Specification of a continuous period within a 24 hour period by times. Start of time period. End of time period. Specification of a continuous period of time within a 24 hour period. A measure of weight defined in metric tonnes. A collection of information providing descriptive references to locations using the TPEG-Loc location referencing approach. A text string which describes or elaborates the location. A descriptor for describing a junction by defining the intersecting roads. The nature of the descriptor used to define the location under consideration (derived from the TPEG Loc table 03). A descriptor for describing a point at a junction on a road network. The nature of the descriptor used to define the location under consideration (derived from the TPEG Loc table 03). Descriptors for describing a junction by identifying the intersecting roads at a road junction. The name of the road on which the junction point is located. The name of the first intersecting road at the junction. The name of the second intersecting road (if one exists) at the junction. Descriptors for describing a point at a road junction. Name of a road network junction where two or more roads join. Descriptors other than junction names and road descriptors which can help to identify the location of points on the road network. Name of an administrative area. Reference name by which an administrative area is known. Name of an airport. Name of an area. Name of a building. Identifier of a bus stop on the road network. Name of a bus stop on the road network. Name of a canal. Name of a county (administrative sub-division). Name of a ferry port. Name of a road network intersection. Name of a lake. Name of a road link. Local name of a road link. Name of a metro/underground station. Name of a nation (e.g. Wales) which is a sub-division of a ISO recognised country. Name of a point on the road network which is not at a junction or intersection. Name of a parking facility. Name of a specific point. Name of a general point of interest. Name of a railway station. Name of a geographic region. Name of a river. Name of a sea. Name of a service area on a road network. Name of a river which is of a tidal nature. Name of a town. Other than as defined in this enumeration. General descriptor for describing a point. The nature of the descriptor used to define the location under consideration (derived from the TPEG Loc table 03). A descriptor for describing a point location. The types of updates of situations that may be requested by a client. The client has currently requested that all situation elements are sent when one or more component elements are updated. The client has currently requested that only the individual elements of a situation that have changed are sent when updated. The client has requested that all situations and their elements which are valid at the time of request be sent together, i.e. a snapshot in time of all valid situations. A Uniform Resource Locator (URL) address comprising a compact string of characters for a resource available on the Internet. Details of a Uniform Resource Locator (URL) address pointing to a resource available on the Internet from where further relevant information may be obtained. A Uniform Resource Locator (URL) address pointing to a resource available on the Internet from where further relevant information may be obtained. Description of the relevant information available on the Internet from the URL link. Specification of validity, either explicitly or by a validity time period specification which may be discontinuous. Specification of validity, either explicitly overriding the validity time specification or confirming it. The activity or action described by the SituationRecord is still in progress, overrunning its planned duration as indicated in a previous version of this record. A specification of periods of validity defined by overall bounding start and end times and the possible intersection of valid periods with exception periods (exception periods overriding valid periods). Values of validity status that can be assigned to a described event, action or item. The described event, action or item is currently active regardless of the definition of the validity time specification. The described event, action or item is currently suspended, that is inactive, regardless of the definition of the validity time specification. The validity status of the described event, action or item is in accordance with the definition of the validity time specification. Weeks of the month. First week of the month. Second week of the month. Third week of the month. Fourth week of the month. Fifth week of the month (at most only 3 days and non in February when not a leap year).