V_{rel_max}

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

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

absolute charging error

difference between the measured charge (toll) value and the actual value as measured by a reference system where a positive error means that the measurement exceeds the actual value.

difference between the measured charge (toll) value and the actual value as measured by a reference system where a positive error means that the measurement exceeds the actual value.

acceleration

rate of change of velocity of an object with respect to time
NOTE 1 to entry: Acceleration is a physical vector quantity; both magnitude and direction are needed to define it.
The unit of the scalar absolute value (magnitude) of acceleration is measured in the international system of units
as metres per second squared (m/s2).

rate of change of velocity of an object with respect to time
NOTE 1 to entry: Acceleration is a physical vector quantity; both magnitude and direction are needed to define it.
The unit of the scalar absolute value (magnitude) of acceleration is measured in the international system of units
as metres per second squared (m/s2).

accepted charging error interval

interval of the relative charging error that the toll charger considers as acceptable, i.e. as correct charging

interval of the relative charging error that the toll charger considers as acceptable, i.e. as correct charging

V_add

additional speed considering the tolerance for the test (m/s)

advisory speed

speed set by an authority which it considers appropriate to the road, traffic, or environmental conditions
being experienced

speed set by an authority which it considers appropriate to the road, traffic, or environmental conditions
being experienced

AF

alternative frequency (an RDS feature)

θ

angle of curved road (AOC) (deg)

antenna bore sight direction

direction of maximum antenna gain

direction of maximum antenna gain

ACID

Application and Content Identifier

area location

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.

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.

attribute identifier

unambiguously distinguishes an attribute from all other attributes within the same element

unambiguously distinguishes an attribute from all other attributes within the same element

availability period (AP)

defined period of time in which the system is available

defined period of time in which the system is available

bearing (BR)

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.

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.

bit error rate (BER)

averaged number of erroneous bits relative to the total number of transmitted bits

averaged number of erroneous bits relative to the total number of transmitted bits

bit rate

number of bits per second, independent of the data coding

number of bits per second, independent of the data coding

B2B

Business to Business

calculation period (CP)

period over which the values are determined

period over which the values are determined

carrier frequencies

number and values of the downlink carrier frequencies, which are equal to the frequencies of the continuous wave CW, transmitted by the RSU and used by transponder OBUs for uplink communication; each carrier frequency is the centre frequency of a downlink channel

number and values of the downlink carrier frequencies, which are equal to the frequencies of the continuous wave CW, transmitted by the RSU and used by transponder OBUs for uplink communication; each carrier frequency is the centre frequency of a downlink channel

clearance time

time between signal phases during which an intersection is not used by any traffic
NOTE 1 to entry: It is expressed in seconds.

time between signal phases during which an intersection is not used by any traffic
NOTE 1 to entry: It is expressed in seconds.

confidence level

optional indication of the correctness and accuracy of the attributes of the vigilance information
NOTE 1 to entry: The exact definition of the levels strongly depends on the offer of the vendor as well as the needs of the customer and hence is a matter of negotiation.

optional indication of the correctness and accuracy of the attributes of the vigilance information
NOTE 1 to entry: The exact definition of the levels strongly depends on the offer of the vendor as well as the needs of the customer and hence is a matter of negotiation.

confidence level

probability that the actual PVT information is within the error bounds of the estimated PVT
information
NOTE 1 to entry: Confidence level represents the confidence that the estimated position does not exceed the error bounds, referred to as protection level in EN 16803-1.
NOTE 2 to entry: Confidence level, the term used in ETSI TS 102 894-2 V1.3.1 (2018-08), is the complementary

probability that the actual PVT information is within the error bounds of the estimated PVT
information
NOTE 1 to entry: Confidence level represents the confidence that the estimated position does not exceed the error bounds, referred to as protection level in EN 16803-1.
NOTE 2 to entry: Confidence level, the term used in ETSI TS 102 894-2 V1.3.1 (2018-08), is the complementary
probability of the integrity risk (i.e. confidence level = 1 – integrity risk)

connection angle (CA)

difference between side road bearing and bearing at a point

difference between side road bearing and bearing at a point

coordinate

one of an ordered set of N numbers designating the position of a point in N-dimensional space
NOTE 1 to entry: N would be 1, 2, or 3.

one of an ordered set of N numbers designating the position of a point in N-dimensional space
NOTE 1 to entry: N would be 1, 2, or 3.

coordinate pair

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

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

CC

country code (an RDS feature)

CID

country identifier

CNAME

country name

V_current

current speed of the subject vehicle (m/s))

data concept revision

integer that represents the number of edits that have been made to the data concept since the last update to the major version number

integer that represents the number of edits that have been made to the data concept since the last update to the major version number