component header

data structure consisting of a component identifier, component length indicator and attribute length indicator

data structure consisting of a component identifier, component length indicator and attribute length indicator

CA

conditional access

CAI

Conditional Access Information

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.

CTT

Congestion and Travel Time

content description GST (CD-GST)

CD-GST optional table that gives the textual descriptions of selected service components

CD-GST optional table that gives the textual descriptions of selected service components

continuity

continuity index field

helps distinguish between different multi-group messages
NOTE 1 to entry: All groups within any particular multi-group message contain the same value of this continuity index.

helps distinguish between different multi-group messages
NOTE 1 to entry: All groups within any particular multi-group message contain the same value of this continuity index.

Control Word (CW)

cryptographic key used to protect the data stream, i.e. the payload data in a TPEG service data frame, by means of encryption

cryptographic key used to protect the data stream, i.e. the payload data in a TPEG service data frame, by means of encryption

corner point

these are the corner points represented by geographical coordinates, which identify the destination zones and areas

these are the corner points represented by geographical coordinates, which identify the destination zones and areas

CTR

Counter (a block cipher mode of operation)

country code (CCD)

assigns a code to each country internationally recognised codes stipulated by ISO 3166-1 when referring to countries and subdivisions of countries
NOTE 1 to entry: Country codes are not unique to one country and can be repeated in non-neighbouring countries.
NOTE 2 to entry: In RDS, The Country Code is transmitted in the first 4-bits of the PI code to signal the origin of the audio…

assigns a code to each country internationally recognised codes stipulated by ISO 3166-1 when referring to countries and subdivisions of countries
NOTE 1 to entry: Country codes are not unique to one country and can be repeated in non-neighbouring countries.
NOTE 2 to entry: In RDS, The Country Code is transmitted in the first 4-bits of the PI code to signal the origin of the audio programme, which may be different to the country where the transmitter is located.
NOTE 3 to entry: Defined in the RDS specification IEC 62106.

CC

country code (an RDS feature)

CID

country identifier

CNAME

country name

cross reference

CRI pointer to one or more messages in the same, or another TPEG service

CRI pointer to one or more messages in the same, or another TPEG service

cryptographic key

parameter used in the block cipher algorithm that determines the forward cipher operation and the inverse cipher operation

parameter used in the block cipher algorithm that determines the forward cipher operation and the inverse cipher operation

CRC

cyclic redundancy check

data integrity; integrity

property that data has not been altered or destroyed in an unauthorized manner

property that data has not been altered or destroyed in an unauthorized manner

data radio channel (DARC)

an FM sub-carrier system for data transmission

an FM sub-carrier system for data transmission

data telegram

digital message exchanged between two systems

digital message exchanged between two systems

delivery notification

departure point

is the point on the link chain near to the destination at which guidance is switched back to autonomous mode in vehicle system to direct drivers to their destination

is the point on the link chain near to the destination at which guidance is switched back to autonomous mode in vehicle system to direct drivers to their destination

destination area

the combination of one or more destination zones which have the same RGI; destination areas are described with boundary lines and exist only in the outer regions

the combination of one or more destination zones which have the same RGI; destination areas are described with boundary lines and exist only in the outer regions

destination zone

these are closed polygons of any type (except concave) with 7 corners maximum within a beacon region; individual destinations within a zone are considered to have the same destination by the system thereby reducing significantly the possible number of destinations and the guidance information necessary; zones can be of any size to suit the terminal guidance accuracy required and large zones can…

these are closed polygons of any type (except concave) with 7 corners maximum within a beacon region; individual destinations within a zone are considered to have the same destination by the system thereby reducing significantly the possible number of destinations and the guidance information necessary; zones can be of any size to suit the terminal guidance accuracy required and large zones can be sub-divided if required

Digital Audio Broadcasting (DAB)

also audio power amplifiers when the DAA is integrated with the functions of

also audio power amplifiers when the DAA is integrated with the functions of

DVB

Digital Video Broadcasting

direction and extent

identifies the adjacent segments or specific point locations also affected by the incident, and where appropriate the direction of traffic affected

identifies the adjacent segments or specific point locations also affected by the incident, and where appropriate the direction of traffic affected

diversion advice

shows whether or not end-users are recommended to find and follow an alternative route

shows whether or not end-users are recommended to find and follow an alternative route

duration

gives an indication of how long the problem is expected to last

gives an indication of how long the problem is expected to last