LSF re-targeting state
temporary target-lost period during a transition to the next target vehicle
ACC stand-by state
state in which there is no longitudinal control by ACC system and the system is ready for activation by the driver
FSRA stand-by state
state in which there is no longitudinal control by FSRA system and the system is ready for activation by the driver
ACC following control state
state in which the system controls the clearance to the target vehicle according to the selected time gap
FSRA following control state
state in which the system controls the clearance to the target vehicle according to the selected time gap
ACC speed control state
state in which the system controls the speed according to the set speed
FSRA speed control state
state in which the system controls the speed according to the set speed
facility condition – SIRI
particular mode of being of a facility; describing its state and availability
FSRA hold state
state in which the system is active during subject vehicle standstill
LSF hold state
condition where the system controls the subject vehicle to be kept stationary
ITS station state information
Information about state of ITS station
status location
location to be used to position location-based status information
EXAMPLE A location for speed limit information or traffic level information.
system states
one of several stages or phases of system operation
stereotype
NOTE 1 to entry: Stereotypes have to be based on certain existing types or classes in the metamodel. Stereotypes may extend the semantics, but not the structure of pre-existing types and classes. Certain stereotypes are predefined in the UML, others may be user defined. Stereotypes are one of three extensibility mechanisms in UML.
NOTE 2 to entry: The stereotype may specify additional constraints and tag definitions that apply to model elements. In addition, a stereotype may be used to indicate a difference in meaning or usage between two model elements with identical structure.
shadowing
condition where the close proximity of a vehicle/equipment interposed between FE and OBE obscures the signals, thus preventing a successful AVI/AEI transaction
NOTE The shadowing caused by normal traffic behaviour is taken into account and overcome to provide a successful transaction. Abnormal shadowing may be caused by large or unusually shaped vehicles/equipment or by vehicles travelling too closely together.
user complaint
complaints related to service provision received by the Toll Service Provider from its Users via contact channels
stopped vehicles
vehicle that has stopped in a traffic lane or on the shoulder of the roadway
road element side
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
data element structure
framework comprising a number of data elements in a prescribed form
NOTE Also known as a “message”.
local data tree
frequently updated data concept stored in the on on-board data pantry containing a collection of data values deemed essential for either a) TARV regulated application service, or b) cooperative intelligent transport systems
traffic message centre
centre that transmits (receives) messages to (from) the vehicle by any communication means other than short range, vehicle-to-roadside communications (beacons)
NOTE The bulk of these messages are expected to be traffic related.
mean time to repair
mean time to repair the service (MTTR) fault and bring the service back into operation
mean time to failure
average time that a system functions before first failure
mean time between failures
mean cycle (one failure and one repair) time of a maintained system
degree
number of edges which are incident with a particular Node
valency degree
number of edges which are incident with a particular Node
subscription
request data packet which is prepared by a client in order to request current or future publication(s)
NOTE In some cases, a subscription may be termed a “request”.