Results for area 7 Road Traffic Data
specification of the end point of a defined route or itinerary
NOTE This may be either a location on a network or an area location.
geodetic longitude angle from the prime meridian plane to the meridian plane of a given point, eastward treated as positive
one of the three descriptors associated to an ILOC reference
recommended terrestrial reference system for Europe and coincident with ITRS at the epoch 1989
NOTE Unlike ITRS, ETRS is centred on the stable part of the European plate and not subject to change due to continental drift in most of Europe.
one of the sequences of two (or three) numbers designating the position of a point, expressed in geodetic latitude, geodetic longitude and (in the three-dimensional case) ellipsoidal height
a sequence of text characters and/or symbols that is displayed on a variable message sign
specification of a location relative to a linear element as a measurement along that element
collection of quantitative data
NOTE 1 to entry: A measurement is made by comparing a quantity with a standard unit. Since this comparison cannot be perfect, measurements inherently include error.
that supports electromagnetic, optical, or acoustical transmissions
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.)
location from where a stream of measured data may be derived
NOTE 1 to entry: It can be a point, a linear road section or an area. Linear sections may even be specified as itineraries or predefined location sets, e.g. for travel time routes which comprise one or more different roads.
quantitative data measured against a quantified scale (possibly using standard units of measure)
NOTE 1 to entry: In comparison to Elaborated Data, measured data can be considered to represent presentation of more directly observed measurements
a representation of a graphic symbol displayed on a variable message sign by means of a (usually multi colour capable) matrix or LED display panel
model of aspects of an information system (e.g. the data model) that is independent of any technical platform used to implement the model; concrete implementations can be derived from the platform independent model by platform specific models or mappings
the basis of a dynamic referencing system named “ILOC referencing system”, subsequently adopted by TPEG as “TPEG-Loc”
a roadside unit which may control one or more variable message signs on a single gantry/mounting or on closely associated separate gantries/mountings
point met first when a linear road section is travelled according to the location direction
geodetic latitude angle from the equatorial plane to the perpendicular to the Earth through a given point, northwards treated as positive
data which is derived/computed from one or more measurements over a period of time
NOTE 1 to entry: It may be a current value or a forecast value predicted from historical measurements.