international terrestrial reference system (ITRS)

reference system for the earth derived from precise and accurate space geodesy measurements, not restricted to GPS Doppler measurements, which is periodically tracked and revised by the International Earth Rotation Service (I.E.R.S.)

reference system for the earth derived from precise and accurate space geodesy measurements, not restricted to GPS Doppler measurements, which is periodically tracked and revised by the International Earth Rotation Service (I.E.R.S.)

intersection

space where two or more roads meet or cross
NOTE 1 to entry: Intersections can be associated with zero junctions, such as a motorway crossing a road without any connecting ramps, or can be associated with one or more junctions, such as a diamond interchange.
NOTE 2 to entry: Complex intersections can be viewed as multiple intersections by providing separate designations for distinct road…

space where two or more roads meet or cross
NOTE 1 to entry: Intersections can be associated with zero junctions, such as a motorway crossing a road without any connecting ramps, or can be associated with one or more junctions, such as a diamond interchange.
NOTE 2 to entry: Complex intersections can be viewed as multiple intersections by providing separate designations for distinct road links. For example, one model could depict a complex intersection as being associated with multiple junctions; another model could depict the same physical infrastructure as being multiple intersections that are interconnected by different roads, each with its own designator (e.g. “ramp from northbound Road A to eastbound Road B”).

Intersection Connecting Point

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.

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.

Intersection Cost

data model entity that provides the time or monetary cost between the entrance Link and exit Link of Intersection for calculating route

data model entity that provides the time or monetary cost between the entrance Link and exit Link of Intersection for calculating route

Intersection Link

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

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

Intersection Link Shape

data model entity that provides the shape of the Intersection Link for displaying a path

data model entity that provides the shape of the Intersection Link for displaying a path

Intersection Name

data model entity that provides the name of an Intersection. An Intersection may have one or more names corresponding to the direction of entering into the intersection

data model entity that provides the name of an Intersection. An Intersection may have one or more names corresponding to the direction of entering into the intersection

intersection point (IP)

core point representing an intersection, located at places where the road section signature at the location changes
NOTE 1 to entry: The intersection point is one of the three defined core point types.

core point representing an intersection, located at places where the road section signature at the location changes
NOTE 1 to entry: The intersection point is one of the three defined core point types.

items

named sequences of characters from the DNF character set which are used to form the DNF notation

named sequences of characters from the DNF character set which are used to form the DNF notation

ISO 14296

ITS — Extension of map database specifications for applications of cooperative ITS

ISO 17572-1

ITS – Location Referencing for Geographic Databases – Part 1: General Requirements and conceptual model

ISO 17572-2

ITS –Location Referencing for Geographic Databases – Part 2: Pre-coded location references (pre-coded profile)

ISO 17572-3

ITS –Location Referencing for Geographic Databases – Part 3: Dynamic location references (dynamic profile)

junction

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

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

Lane Shape

data model entity that provides the shape geometry of the lane

data model entity that provides the shape geometry of the lane

WL

lane width

layer

sub-set of map data resulting from a subdivision of data of the same coverage area based on contents (similar to ISO 14825 GDF layer) and which is typically related to one or only a few of the application categories
EXAMPLE: District name, which is one of the data items for Route Guidance applications, is included in a layer.

sub-set of map data resulting from a subdivision of data of the same coverage area based on contents (similar to ISO 14825 GDF layer) and which is typically related to one or only a few of the application categories
EXAMPLE: District name, which is one of the data items for Route Guidance applications, is included in a layer.

level

subset of map data resulting from a classification of data of the same semantic content based on the level of detail or density, related to the concept of different map scales
NOTE: Level 0 is considered the lowest level (greatest detail); higher levels are numbered level 1, level 2, etc.
EXAMPLE: Map display data may be organised into 6 levels representing different zoom scales.

subset of map data resulting from a classification of data of the same semantic content based on the level of detail or density, related to the concept of different map scales
NOTE: Level 0 is considered the lowest level (greatest detail); higher levels are numbered level 1, level 2, etc.
EXAMPLE: Map display data may be organised into 6 levels representing different zoom scales.

line feature

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

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

line string

curve composed of straight-line segments

curve composed of straight-line segments

linear location

spatial location that extends between two point locations along a defined path
NOTE 1 to entry: The path can exhibit 3-dimensional characteristics.

spatial location that extends between two point locations along a defined path
NOTE 1 to entry: The path can exhibit 3-dimensional characteristics.

linear referencing (LR)

specification of a location relative to a linear element as a measurement along that element

specification of a location relative to a linear element as a measurement along that element

link

directed topological connection between two nodes, composed of an ordered sequence of one or more segments and represented by an ordered sequence of zero or more shape points
segment of a road network
NOTE 1 to entry: While highway links are generally separated by one data collection node (such as an RSE or a vehicle detector station), local road links tend to be limited by intersections…

directed topological connection between two nodes, composed of an ordered sequence of one or more segments and represented by an ordered sequence of zero or more shape points
segment of a road network
NOTE 1 to entry: While highway links are generally separated by one data collection node (such as an RSE or a vehicle detector station), local road links tend to be limited by intersections with cross streets.

Link Cost

data model entity that provides the time or monetary cost of the Link for calculating route

data model entity that provides the time or monetary cost of the Link for calculating route

link identifier (link ID)

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.

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.

link location

pre-coded location reference

pre-coded location reference

link travel time

travel time of a specific link

travel time of a specific link

LKAS_curvature_rate_max

maximum rate of change of curvature which is allowed for the curve test track

maximum rate of change of curvature which is allowed for the curve test track

LKAS_curve_time

minimum duration of the curve test after entering the curve

minimum duration of the curve test after entering the curve

LKAS_Lat_Acel_max

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

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