primitive

fundamental form from which all other forms can be derived

fundamental form from which all other forms can be derived

property

combination of Attribute and Relationship values which pertain to a Feature and which together define a certain characteristic of the Feature

combination of Attribute and Relationship values which pertain to a Feature and which together define a certain characteristic of the Feature

quad tree

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

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

recommended route

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

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

record

implementation dependent construct that consists of an identifiable collection of one or more related Fields

implementation dependent construct that consists of an identifiable collection of one or more related Fields

rectangle

unit of geographic space, 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

unit of geographic space, 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

regular parcel

parcel shaped like a rectangle
NOTE: Regular parcels on the same generalization level are not intended to overlap.

parcel shaped like a rectangle
NOTE: Regular parcels on the same generalization level are not intended to overlap.

relationship

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…

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.

relationship code

alphanumerical identifier for a Relationship

alphanumerical identifier for a Relationship

relationship type

defined characteristic of a Feature which is dependent on other Features

defined characteristic of a Feature which is dependent on other Features

ISO TS 20452

Requirements and Logical Data Model for a Physical Storage Format (PSF) and an Application Program Interface (API) and Logical Data Organization for PSF used in Intelligent Transport Systems (ITS) Database Technology

resolution

smallest unit which can be represented fixing a limit to precision and accuracy

smallest unit which can be represented fixing a limit to precision and accuracy

reverse geocoding

determination of the address description of a link or node, i.e. determination of an upwards path across the place tree

determination of the address description of a link or node, i.e. determination of an upwards path across the place tree

road

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…

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.

Road Bridge and Tunnel

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

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

road crossing

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.

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.

road descriptor (RD)

full road number, or a significant substring of the official road name
NOTE: The road descriptor is ideally three to five characters in length.

full road number, or a significant substring of the official road name
NOTE: The road descriptor is ideally three to five characters in length.

road element

linear section of the road network which is designed for vehicular movement having a junction at each end
NOTE 1 to entry: It serves as the smallest unit of the road network at GDF level 1 that is independent.

linear section of the road network which is designed for vehicular movement having a junction at each end
NOTE 1 to entry: It serves as the smallest unit of the road network at GDF level 1 that is independent.

Road Element Shape

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

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

road element side (RES)

basic component of the road section entity that represents left or right side of a link and corresponds to one or more unique combinations of a navigable feature and a house number range

basic component of the road section entity that represents left or right side of a link and corresponds to one or more unique combinations of a navigable feature and a house number range

road junction (Infrastructure Network MODEL)

a type of INFRASTRUCTURE POINT used to describe a road network

a type of INFRASTRUCTURE POINT used to describe a road network

Road Marking

data model entity that provides the shape of painted markings on roads such as lane markings these may be used for display purposes

data model entity that provides the shape of painted markings on roads such as lane markings these may be used for display purposes

road network

interconnected collection of roads

interconnected collection of roads

road network location

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.

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.

road section

aggregation of one or more road links that represents a contiguous length of a road that shares the same management and operational strategies
EXAMPLE: A traffic signal timing plan is applied to one road section.
NOTE 1 to entry: Different road models can divide the same road into different road sections.

aggregation of one or more road links that represents a contiguous length of a road that shares the same management and operational strategies
EXAMPLE: A traffic signal timing plan is applied to one road section.
NOTE 1 to entry: Different road models can divide the same road into different road sections.

road section signature

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

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

road segment

link that represents a contiguous length of a road link characterized by the same physical characteristics
NOTE 1 to entry: The definition of road segments is highly dependent on which characteristics are modelled by the implementation. Characteristics that can result in a new road segment include addition or subtraction of a lane, a change in roadway width, the change of road type (e.g.…

link that represents a contiguous length of a road link characterized by the same physical characteristics
NOTE 1 to entry: The definition of road segments is highly dependent on which characteristics are modelled by the implementation. Characteristics that can result in a new road segment include addition or subtraction of a lane, a change in roadway width, the change of road type (e.g. start/end of a bridge), etc.

Road Signage

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.

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.

roadside beacon (RS)

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

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

route guidance

application category that deals with the generation of graphical, textual, and/or audio instructions for following a planned route service which utilizes directional information, destination or real-time data to select an appropriate route, either prior to or during a trip
NOTE: Route guidance is one of the six application categories supported by the API.

application category that deals with the generation of graphical, textual, and/or audio instructions for following a planned route service which utilizes directional information, destination or real-time data to select an appropriate route, either prior to or during a trip
NOTE: Route guidance is one of the six application categories supported by the API.