data model entity that provides the geocoded Street Address of the Road Element

zero-dimensional element that specifies geometric location specified by one coordinate pair or triplet

arbitrary points on the curved road that has associated location and value of curvature

data model entity that provides the location and shape of road side features such as a toll gate, or a fixed Road Side ITS station

travel time is the actual time required for a vehicle to pass through a specific roadway section in a route

location to be used as the end location of a journey for a route guidance application

collection of related data records having a homogeneous structure

characteristic of a geographic object, usually stored in an attribute

EXAMPLE Road names or road numbers.

full road number, or a significant substring of the official road name

NOTE The road descriptor is ideally three to five characters in length.

the recommended route is a route calculated by the CDRG infrastructure and sent to the invehicle unit

technical representation of a Traffic Situation within the onboard equipment, accomplished by a number of Traffic Information Reports; this Traffic Information can be displayed to the customer via suitable terminals

data model entity that contains an external reference (e.g. VICS or RDS-TMC) and is linked to either place or transportation entities

data model entity that provides the detailed text of the road signage on the Road Element

NOTE 1 to entry Route Guidance is one of the six application categories elements and joining two intersections, serving as the smallest independent unit of a road network at GDF level 2.

spatial reference generated on-the-fly based on geographic properties in a digital map database

small part of an area enclosed by another area, seen from the area to which that part belongs

two-dimensional face on the surface of the earth, with a specified outline either being a simple geometric figure or an irregular outline/polygon

a classification based on the importance of the road element in the connectivity of the total road network

all non-Motorways that are part of a connection used for nation wide traffic and transport

well defined geographic place described by one coordinate tuple

NOTE 1 to entry The “geolocation” term is a short version of the term used within some ITS communities.

[SOURCE: ISO 19145:2013, 4.1.11, modified – Note 1 to entry added.]

spatial reference in the form of a label or code that identifies a location

EXAMPLE “Spain” is an example of a label (country name); “SW1P 3AD” is an example of a code (postcode).

NOTE 1 to entry The term “location code” has been used previously in ISO/TC 204 documents, but “geographic

identifier” is preferred to better align with the activities of ISO/TC 211.

[SOURCE: ISO 19112:2019, 3.1.2, modified — Note 1 to entry and deprecated term “location code” added.]

database representation of a real world object

set of points and a set of arrows, with each arrow joining one point to another, whereby the points are called Nodes of the graph, and the arrows are called the Edges of the graph

specific quality or quantity assigned to an Attribute

minimum duration of the curve test after entering the curve

maximum lateral jerk which is allowed to be induced by a lane keeping action

directed sequence of non-intersecting Line Segments with Nodes at each end

identifier that is uniquely assigned to a link

NOTE 1 to entry A link identifier can be arbitrary or can be assigned by convention, to ensure that no multiple occurrences of the same identifier will be used within one instance of a network or map database.

selection of road segments to be referenced belonging to a certain area (subnetwork)

NOTE 1 to entry One implicit area can be built up of multiple subnetworks that are geographically connected.

following the reception of destination and related information from the in-vehicle unit, the infrastructure provides the in-vehicle unit with information that defines the recommended route, describes route conditions, and provides an estimated travel time to the destination

explicit area with an outline defined by a simple geometric figure

simple curved road with a constant radius of curvature separated from other curved roads

NOTE 1 to entry The clothoid can be included.

basic sub-function within the set of functionality for cooperative ITS support

NOTE 1 to entry This International Standard identifies eight application categories: Positioning, Route Planning, Route Guidance, Map Display, Address Location, Services and POI Information Access, cooperative ITS including Driving support, Multi-Modal Travel.

sequence of symbols that controls the operations of a cryptographic transformation (e.g. encipherment, decipherment, cryptographic check function computation, signature generation, or signature verification)

alphanumeric identifier for an Attribute type

cryptographic key used to protect the data stream, i.e. the payload data in a TPEG service data frame, by means of encryption

intersection that consists at least of two or more junctions and one or more road elements

area regarded as a geographical unit, which is defined by the delivery of a specific public or private sector service

location where two or more roads connect or intersect

NOTE 1 to entry A road crossing can be “simple”, corresponding to one junction, or “complex”, including internal road elements and junctions.

hierarchical data structure which on a next lower level subdivides a given area into four quadrants of the same size where any level has knowledge of its four sublevels and its parent level

one-dimensional Feature defined as a sequence of one or more Edges

conceptual data store which is embedded in an ITS station and which contains topographical, positional and status information

ordered sequence of a Road Element, a Junction and one or more Road Elements, and optionally associated with a Traffic Sign

data model entity that represents geometrical information for display purposes

NOTE A cartographic feature has non-explicit topology; it has zero-, one- and two-dimensional types, i.e. Display Point, Polyline, and Polygon.

methodology of assigning location references to locations

named area which can be used as part of address location

register of spatial references of one or more location sub-types containing some information regarding position

NOTE 1 to entry The positional information need not be coordinates but could be descriptive.

[SOURCE: ISO 19112:2019, 3.1.1, modified — “register of location instances...” changed to “register of spatial references...” in order to fit the relevant concept model.]

multi-mode route guidance provides route guidance under the combined operation of the Interactive CDRG, LDRG and SRG systems

ordered list of values

NOTE 1 to entry Considered values are here geodetic coordinates.

point that is directly (topologically) connected to a given point, in a direction that is defined by the defined direction of the location

NOTE 1 to entry A point can have zero or more next points.

data model entity that provides information about an approaching condition on a road that may require some action by the driver of a vehicle

system which provides a driver with step-by-step driving instructions that are similar to those offered by a LDRG

NOTE With a centrally determined system, the routing instructions are determined at an off-vehicle location and transmitted to the vehicle.

system which provides a driver with step-by-step driving instructions that are determined by an on-vehicle system

NOTE The system typically consists of a display screen, a computer, routing and guidance software, a navigable map database, and positioning equipment to track the vehicle's location as it proceeds along its path.

data model entity that represents the name for the transportation element, including GDF road element, GDF ferry connection, GDF junction, GDF intersection

NOTE Navigable feature name is related to places, crossroads, junctions, and road sections.

unit of geographic  , defined by two parallels of min/max latitude and by two meridians of

min/max longitude, that represents the coverage area of the map data enclosed by or located on the

outline of the rectangle

curved road with two or more radii of curvature in the same direction

explicit area with an outline defined by segments being either polylines or linear locations

road section signature of a side road section

location where the radius of curvature of the curved roadway ahead becomes less than RC

application function for Multi-Modal Travel Service

description of a spatial location in the real world according to a defined reference system

EXAMPLE Coordinate tuple: 51.476852, -0.000500.

NOTE 1 to entry It is not necessary for the rules be formal coordinates but they could be descriptive.

NOTE 2 to entry The term “location reference” has been used within ITS, but the term “spatial reference” is preferred to better align with the activities of ISO/TC 211.

plurality of road segments lying in geographical or topological conjunction to each other

spatial location with no length in any of the spatial dimensions

location which has a one-dimensional and continuous structure, being part of a road network

NOTE 1 to entry It is a continuous stretch of that road network as realized in the database, which can cover different roads, and can be bounded on either side by an intersection. Alternatively it can be bounded on either side by a position on a road.

pre-coded location reference

complete system by which location references are generated, according to a location referencing method, and communicated, including standards, definitions, software, hardware, and databases

planar surface defined by one exterior boundary and zero or more interior boundaries

data model entity for a government-designated code used to specify regions for addressing

NOTE Postal code is related to link, navigable feature name, place, and POI.

core point that bounds or is located on the location

NOTE 1 to entry Location points can coincide with intersection points or routing points. The start and the end of the location are always represented by a location point. Additional intermediate location points can be created to represent the shape of the location. The location point is one of the three defined core point types.

data model entity that provides map database features for background display

curvilinear length of roadway that shares the same identification

NOTE 1 to entry A length of the road network may be referenced by multiple designators (e.g. Main Street and Route 7). In this case, there would be two “roads” that share the same set of “carriageways”.

NOTE 2 to entry A road can change directions at a junction.

NOTE 3 to entry The identification is generally a name or number.

parcel shaped like a rectangle

NOTE Regular parcels on the same generalization level are not intended to overlap.

navigable feature which is either a named GDF junction or named GDF intersection, and that relates a named navigable feature to a set of links and nodes and a place

data model entity that provides the shape data of a cartographic feature for displaying a map

location within three-dimensional  

NOTE 1 to entry The “location” could be a point (consuming no  ) or could consume   in one, two, or three dimensions. In any case, the location is identified within a larger  .

NOTE 2 to entry Within ITS, locations are typically locations on or near the surface of the earth.

shape along the location, coded on the most detailed level of the digital map, lying in a corridor with a defined perpendicular distance to the great circle connection between two successive points on a location

data model entity for a topological junction of two or more links or end bounding a link

NOTE 1 to entry A link stores the coordinate value of the corresponding GDF junction.

application category that deals with the task of expressing a real world position in terms of the data representation

NOTE Address location is one of the six application categories supported by the API.

road signature value of the attribute quadruple (functional road class, form-of-way, road descriptor, driving direction)

data model entity that provides a representative point of a Service and POI

graph which can be embedded in a plane, meaning that it can be drawn on the plane so that Edges intersect only at a Node mutually incident with them

additional point or set of points, not belonging to the location reference core, available in a location reference under special conditions

semantic or topological interrelation or dependency between locations in the LRS

NOTE Relationships can exist between locations in the LRS. These relationships will generally be structured to allow more sophisticated use of the location reference, such as a topological or hierarchical structure. For example, a county location may be defined as an aggregate of several city locations or a long stretch of road may be an aggregate of several smaller road segments. Referencing the county may be easier than referencing all the cities which make up the county. This allows scalability and ease of use in the LRSs using the LRM.

traffic assignment is the distribution of traffic in response to the needs of both the traffic situation and the intents of management personnel at the traffic control centre in order to realize a safe, smoothly flowing traffic environment

curve composed of straight-line segments

straight section of a link connecting two successive shape points, or a shape point and a node, or two nodes where a link does not contain shape points

point met first when a linear road section is travelled according to the location direction

data model entity that provides information such as the length, height and slope of bridges and tunnels

application category that provides information on a trip from an origin to a destination using alternative modes of transportation or a combination of transport modes for one trip

NOTE 1 to entry This service may include navigation.

angle between a reference direction and the direction to an object measured clockwise

NOTE 1 to entry Unless otherwise specified, the reference direction is generally understood to be geographic north.

edge which is bounded at both ends by one and the same node

status of being topologically connected

NOTE 1 to entry In a graph, two or more edges are said to be connected if they share one or more nodes.

data model entity that provides the Links in the Intersection used for determining the path through an intersection

standardized method for referencing geographic locations including points, links between points and geographic areas

location to be used to position location-based status information

EXAMPLE A location for speed limit information or traffic level information.

centre that transmits (receives) messages to (from) the vehicle by any communication means other than short range, vehicle-to-roadside communications (beacons)

NOTE The bulk of these messages are expected to be traffic related.

number of edges which are incident with a particular Node

data model entity that represents an icon associated with a cartographic feature

support system that provides map databases used to support ITS services

properties of spatial configuration invariant under continuous transformation

NOTE In a digital map database this means the logical relationships among map features. It can be used to characterize spatial relationships such as connectivity and adjacency.

finite, alternating sequence of nodes and edges, such that every arc is immediately preceded and succeeded by the two vertices with which it is incident and in which no vertex is repeated, except (possibly) the first and the last one

point used to reconstruct the location by route calculation

NOTE 1 to entry RPs are intended to allow point-based matching to the map database of the end user. When such an RP match is found, the location then can be further reconstructed using the connectivity of the road network as represented in the map database of the end user. The routing point is one of the three defined core point types.

alphanumeric identifier for a Feature Class

data model entity that provides the shape geometry of the Road Element for displaying Road and Positioning

attribute of road section entity that specifies the type of house number ranges

EXAMPLE Distinction between base address, county address, commercial address, etc., or no address.

defined characteristic of a Feature, which is independent of the other Features

defined characteristic of a Feature which is dependent on other Features

difference between side road bearing and bearing at a point

application category that deals with the determination of vehicle location and map-matching

NOTE Positioning is one of the six application categories supported by the API.

level associated with places of place classification “administrative subdivision”

NOTE Higher/lower level situations are constituted by the occurrence of a parent/child place relationship between places.

reference source of sufficient Completeness and/or accuracy that may be substituted for Field verification when measuring the Completeness and/or accuracy of map database Features, Attributes, or properties

point having known coordinates in the real world and identifiable with a corresponding point in a map or an aerial photograph or satellite image

zero-dimensional element that is a topological junction of two or more edges, or an end point of an edge

NOTE A node is created for topologically significant points, such as simple intersections of roads or other linear features including boundaries but also for locations such as electric beacons, kilometre-posts or sensors detecting traffic flows, being significant points specified in a map.

short-range vehicle-to-roadside communication device with the inherent location feature that if the vehicle is receiving the signal, then the vehicle has to be positioned in a specific, localized area

bivalent relationship between place entities, constituting the place tree linking parent and child places (“place A is in place B”)

NOTE Place relationship does not imply strict or complete containment. It is attributed as: address significant, official, postal or useful for reverse geocoding.

all transportation elements and all services, including their relationships to transportation elements

origin of data in analogue or digital representation, stored on any kind of data medium

application category that deals with graphical information presentation

NOTE Map display is one of the six application categories supported by the API.

zero-dimensional type of cartographic feature