number capable of being specified by the formula M × 10E where M and E are two integers called the mantissa and the exponent, respectively

set of two coordinates (one longitude value and one latitude value), representing a position on the earth model

distance of a point from the ellipsoid measured along the perpendicular from the ellipsoid to point positive if upwards or outside of the ellipsoid

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.]

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

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

maximum value by which the outer edges of the tyres of the vehicle are allowed to exceed the lane boundary

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.

spatial location that extends between two point locations along a defined path

NOTE 1 to entry The path can exhibit 3-dimensional characteristics.

special instance of rectangle location given by a base rectangular shape that is its lower left cell multiplied to the North (by defining the number of rows) and to the East (by defining the number of columns)

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.

spatial location with no length in any of the spatial dimensions

spatial location enclosed within a two-dimensional boundary or boundaries across a defined surface

EXAMPLE The British Isles.

NOTE 1 to entry The boundary can consist of a single curvilinear line (e.g. a circle) or multiple curvilinear lines (e.g. the boundaries of city limits) and can consist of multiple enclosed areas.

pair of values subtracted from all coordinate values in order to shorten these coordinate values

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.

number of edges which are incident with a particular Node

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.

difference between side road bearing and bearing at a point

maximum relative vehicle speed at which the system is capable of operating