international registrar

company authorized to register Protection Profiles at an international level

company authorized to register Protection Profiles at an international level

International Standardised Profile (ISP)

internationally agreed-to, harmonized document which describes one or more profiles

internationally agreed-to, harmonized document which describes one or more profiles

ITU

International Telecommunication Union

IETF

Internet Engineering Task Force

IPsec

Internet Protocol Security

interoperability management (IM)

role that manages the toll charging environment, i.e. defining and maintaining a set of rules that, taken together, defines the policy of a given toll regime or of the overall toll charging environment

role that manages the toll charging environment, i.e. defining and maintaining a set of rules that, taken together, defines the policy of a given toll regime or of the overall toll charging environment

IAP

interoperable application profile

IFMSA

interoperable fare management system architecture

interval scale parameters

scale of measurement of data, according to which the differences between values can be quantified in absolute but not relative terms and for which any zero is merely arbitrary
NOTE: Interval scaled parameters are applicable in mathematical equations using the operators plus or minus. Interval scales having a zero offset are equal to ratio scales.
EXAMPLE: The temperature scale in Celsius…

scale of measurement of data, according to which the differences between values can be quantified in absolute but not relative terms and for which any zero is merely arbitrary
NOTE: Interval scaled parameters are applicable in mathematical equations using the operators plus or minus. Interval scales having a zero offset are equal to ratio scales.
EXAMPLE: The temperature scale in Celsius is an interval scale, in Kelvin it's a ratio scale.

itinerary

travel diary organized in one or more itinerary records enabling assessment of the correctness of the toll declaration

travel diary organized in one or more itinerary records enabling assessment of the correctness of the toll declaration

itinerary freezing

registering an itinerary and undeniably committing oneself to it

registering an itinerary and undeniably committing oneself to it

itinerary leaf

sequence of sequential itinerary records of the same type all pertaining to a defined set of toll domains

sequence of sequential itinerary records of the same type all pertaining to a defined set of toll domains

itinerary record (IR)

atomic data element describing use of the road network or use of the vehicle

atomic data element describing use of the road network or use of the vehicle

itinerary trunk

sequence of aggregated data committing to a number of underlying itinerary leaves

sequence of aggregated data committing to a number of underlying itinerary leaves

ITS on-board equipment; on-board equipment (OBE)

vehicle system that provides all ITS functionality on-board the vehicle
NOTE 1 to entry: ITS on-board equipment relates to any functionality. When there is a need to distinguish between core functionality and that by a special vehicle, the term can be further refined by indicating the type of vehicle to which the on-board equipment relates. For example, emergency vehicle on-board equipment…

vehicle system that provides all ITS functionality on-board the vehicle
NOTE 1 to entry: ITS on-board equipment relates to any functionality. When there is a need to distinguish between core functionality and that by a special vehicle, the term can be further refined by indicating the type of vehicle to which the on-board equipment relates. For example, emergency vehicle on-board equipment can provide specialized functionality.
NOTE 2 to entry: The on-board equipment may also perform other functions.

ITS on-board unit; on-board unit (OBU)

part of on-board equipment that provides wireless connectivity to other ITS components external to the vehicle
NOTE 1 to entry: An OBU implementation can also include ITS functionality.

part of on-board equipment that provides wireless connectivity to other ITS components external to the vehicle
NOTE 1 to entry: An OBU implementation can also include ITS functionality.

key certification authority (CA)

authority trusted by one or more users to create and assign public-key certificates

authority trusted by one or more users to create and assign public-key certificates

key management

Encryption Key Control generation, distribution, storage, application and deletion of encryption keys

Encryption Key Control generation, distribution, storage, application and deletion of encryption keys

KPI

Key Performance Indicator

KVC

key verification code

laboratory tests

tests which are performed in a laboratory under specified conditions

tests which are performed in a laboratory under specified conditions

layout

technical description of the location of a tolled object including, if applicable, auxiliary data for determining the vehicle's position relative to the tolled object

technical description of the location of a tolled object including, if applicable, auxiliary data for determining the vehicle's position relative to the tolled object

LPN

licence plate number

L2

link layer; layer 2 DSRC

LSDU

Link Service Data Unit

LPDU

LLC protocol data unit

localisation augmentation (communication) (LAC)

information sent by the roadside equipment to the on-board equipment to augment the positioning for autonomous systems

information sent by the roadside equipment to the on-board equipment to augment the positioning for autonomous systems

LLC

logical link control

MAC_NR (MAC_NR)

DSRC Message Authentication guaranteeing Non-Repudiation to the Toll Charger

DSRC Message Authentication guaranteeing Non-Repudiation to the Toll Charger

MAC_TC (MAC_TC)

DSRC Message Authentication Code for Toll Charger

DSRC Message Authentication Code for Toll Charger