Compared to ITS mobility services cooperative functions and technologies of C-ITS represent still a very dynamic area where terms and abbreviation are further under development and harmonisation. The CAR 2 CAR Communication Consortium publishes the C-ITS Glossary for supporting he better understanding of the C-ITS developments and related publications. By nature the Glossary is not complete and will be therefore updated from time to time.
Glossary
| Abbreviation | Explanation |
|---|---|
| 3GPP | 3rd Generation Partnership Project, unites the telecommunications standard development organisations ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC |
| 3GPP Release 14 | Covers a series of mission critical enhancements, LTE sidelink support for V2X services, eLAA, Uu 4 band Carrier Aggregation, narrow-band IoT. |
| 3GPP Release 15 | Contains update for Uu link (1024 QAM), refined eLAA, enhancements to NB IoT, and enhancements/fixes for sidelink V2X. |
| 3GPP Release 16 | Shall be completed by June 2020, covers a. o. multimedia priority service, vehicle-to-everything (V2X) application layer services, 5G satellite access, Local Area Network support in 5G, wireless and wireline convergence for 5G, terminal positioning and location, communications in vertical domains and network automation, new radio, … |
| 5G NR V2X | Direct communication specified by 3GPP R16 based on a new radio (NR) interface. 5G V2X is neither co-channel coexistent (not compatible) with LTE-V2X release 14, 15 nor with WLANp. 5G V2X is not interoperable on physical air interface neither with LTE-V2X release 14, 15 nor with WLANp. |
| 5.8 GHz | Tolling: The band 5 795 MHz to 5 815 MHz has been harmonised for the use by Transport and Traffic Telematics (TTT), also called CEN DSRC, by the EC decision 2013/752/EU and the ECC recommendation ECC/REC/70-03, which is primarily used for road charging systems in Europe and elsewhere |
| 5.9 GHz | ITS spectrum for cooperative applications: vehicle-to-vehicle, vehicle-to-infrastructure-, vehicle-to-pedestrian communication, TR 102 492-2: 5,855 to 5875 MHz for non-safety ITS (ECC REC (09)01, Implementing DEC (EU) 2019/1345, ERC REC 70-03)5,875 5,905 GHz for safety-related Road ITS applications ECC DEC (08)01, EC DEC 2008/671 5905 to 5925 MHz as future extension of the ITS (ECC DEC (08)01)band |
| 64 GHz | 63,72-65,88 GHz: TTT, available to vehicle-to-vehicle, vehicle-to-infrastructure and infrastructure-to-vehicle systems. Implementing DEC (EU) 2019/1345 |
| AA | Authorisation Authority |
| ABS | Anti-lock Braking System |
| ACC | Adaptive Cruise Control |
| ADAS | Advanced Driver Assistance System |
| AEB | Autonomous Emergency Braking |
| AEF | Agricultural Industry Electronics Foundation |
| Amsterdam Group | strategic alliance of committed key stakeholders CEDR, ASECAP, POLIS and C2C-CC |
| ANSSI | Agence nationale de la sécurité des systèmes d' information, National Cybersecurity Agency of France |
| Application | Computer program that performs a function useful to the user |
| ASECAP | European Association of Operators of Toll Road Infrastructures |
| ASN.1 | Abstract Syntax Notation One is an International Standards Organisation (ISO) data representation format [ITU-T X.691/ISO/IEC 8825-2] |
| ASR | Anti-Slip Regulation |
| AT | Authorisation Ticket, a.k.a. Pseudonym Certificate (PC) |
| AUT | Automatic Transmission |
| BSI | German Federal Office for Information Security |
| BSP | Basic System Profile of the CAR 2 CAR Communication Consortium |
| BTP | Basic Transport Protocol |
| C-ACC | Cooperative Adaptive Cruise Control |
| Car2Car | Cooperative Vehicle-to-Vehicle communication based on ITS-G5 |
| Car2I | Cooperative Vehicle-to-Infrastructure communication based on ITS-G5 |
| Car2VRU | Cooperative Vehicle-to-Vulnerable Road User communication based on ITS-G5 |
| Car2X | Cooperative Vehicle-to-Anything communication based on ITS-G5 |
| C-ITS | Cooperative Intelligent Transport Systems and Services, refers to transport systems, where the cooperation between two or more ITS sub-systems (personal, vehicle, roadside and central) enables and provides an ITS service that offers better quality and an enhanced service level, compared to the same ITS service provided by only one of the ITS sub-systems |
| C-I2X | Cooperative Infrastructure-to-Anything communication |
| C-Roads | European platform for harmonising C-I2X services and ensuring interoperability of C-ITS infrastructure implementations |
| C-V2X | Cooperative Vehicle-to-Anything communication, Note: others like 5GAA might use this term differently and interpret it as LTE V2X |
| C2C-CC | CAR to CAR Communication Consortium |
| CA | Certificate Authority |
| CAM | Cooperative Awareness Message according to EN 302 637-2 |
| Camera | Optical image sensor |
| CAN | Controller Area Network |
| CBR | Channel Busy Ratio |
| CCAM | Cooperative, connected and automated mobility covering a. o. autopilot, smart vehicles, automated / autonomous driving, platooning |
| CDD | Common Data Dictionary |
| cellular | 3G, 4G, 5G, 6G mobile communication, long range communication in IMT spectrum bands |
| CEDR | Conference of European Directors of Roads |
| CEN | European Committee for Standardisation |
| CEN/ ISO TC 278 | CEN/ISO Technical Committee dealing with Intelligent Transport Systems (ITS) |
| CL | Channel Load |
| CPM | Collective Perception Message, TS 103 324 |
| DAB+ | Digital Audio Broadcasting |
| DCC | Decentralised Congestion Control – a mechanism that aims at reducing channel congestion for ITS G5 ITS-Ss |
| DEN | Decentralised Environmental Notification |
| DENM | Decentralised Environmental Notification Message according to EN 302 637-3 |
| Device-to-Device | 5G side-link enables short range direct communication between devices, e. g. vehicles, smartphones |
| DP | DCC profile |
| DSRC | Dedicated Short Range Communication based on IEEE 802.11p Needs to be differentiated from CEN DSRC which is the European tolling technology in 5.8 GHz |
| Day 1 / 2 / 3+ | Successive C-ITS deployment phases of use cases and technologies |
| EA | Enrolment Authority |
| EAL | Evaluation Assurance Level |
| EC | European Commission |
| ECC | Elliptic Curve Cryptography |
| ECE | Economic Commission for Europe |
| ECDSA | Elliptic Curve Digital Signature Algorithm |
| ECIES | Elliptic Curve Integrated Encryption Scheme |
| ETSI | European Telecommunication Standards Institute |
| ETSI TC ITS | ETSI Technical Committee dealing with Intelligent Transport Systems (ITS) |
| EU EIP | European ITS Platform |
| Functional Safety | ISO 26262 Functional Safety, IEC 61508 |
| FCW | Forward Collision Warning |
| FIPS | Federal Information Processing Standard |
| Galileo | European Global Navigation Satellite System |
| GBC | GeoBroadcast |
| GDPR | General Data Protection Regulation (EU) 2016/679 (GDPR) |
| Geofencing | Geographical fence for triggering services / applications |
| GLONASS | Russian Global Navigation Satellite System |
| GN | GeoNetworking |
| GNSS | Global Navigation Satellite System |
| GPS | U.S. Global Positioning System |
| HMI | Human Machine Interface |
| HSM | Hardware Security Module |
| I2Car | Cooperative Infrastructure-to-Vehicle communication based on ITS-G5 |
| I2V | Infrastructure-to-vehicle communication |
| I2X | Infrastructure-to-Anything communication |
| IC | Integrated Circuit |
| ICT | Information and Communication Technologies |
| IEEE | Institute of Electrical and Electronics Engineers |
| IEEE 802.11 | Wireless Local Area Network (WLAN), Wi-Fi, is part of IEEE 802 LAN protocols, and specifies media access control (MAC) and physical layer (PHY) protocols, communication in various frequencies, including but not limited to 2.4 GHz, 5 GHz, and 60 GHz frequency bands |
| IEEE 802.11p | Ad-hoc short-range WLAN communication specially designed for automotive application |
| IEEE 802.11bd | Enhancing automotive WLAN standard allowing seamless interoperability of operation in channels and across channels |
| IRC | Impact Reduction Container |
| ISO | International Organisation for Standardisation |
| ITS | Intelligent Transport Systems and Services |
| ITS-AID | ITS - Application Object Identifier |
| ITS G5 | European implementation of WLANp based on IEEE 802.11p or extended IEEE 802.11bd |
| ITS-S | ITS Station (might be e. g. vehicle or Road Side Unit) |
| IVI | In-Vehicle Information |
| KPI | Key Performance Indicator |
| Landmark | Fixed reference point used for positioning and navigation |
| LDM | Local Dynamic Map – a representation of the current environment within an ITS-S |
| Lidar | Light detection and ranging, optical sensor that measures distance to a target by illuminating the target with laser light and measuring the reflected light in three dimensions. |
| LTE-V2X release 14 | Direct peer to peer short range communication in 5.9 GHz is called sidelink, or PC5, while its long-range network based communication with LTE mobile communication in IMT bands is called Uu-link. |
| LTE-V2X release 15 | Besides others solves some issues of LTE V2X sidelink release 14 (correction of channel interleaver pattern) and few new features (higher modulation, carrier aggregation support). LTE V2X release 15 sidelink (PC5) PSSCH messages are not decodable by LTE-V2X release 14 users. |
| LT-RWW | Road Works Warning (long term), complex use case requiring the consideration of complementing message sets like DENM, MAP, IVI, … |
| M/453 | Mandate of European Commission to standard development organisations for developing minimum set of interoperable C-ITS standards |
| MAP | Map message to support e.g. intersections according to ISO/TS 19091:2017 |
| MAPEM | Map Extended Message [ISO/TS 19091 2019-06] |
| MCO | Multi-Channel Operation |
| NIST | National Institute of Standards and Technology |
| OEM | Original Equipment Manufacturer |
| OSP | Organisational Security Policy |
| P2V | Pedestrian-to-Vehicle communication |
| P2I | Pedestrian-to-Infrastructure communication, e. g. to ITS-S, RSU |
| P2X | Pedestrian-to-Anything communication |
| PC5 | 5G direct communication between vehicle and other devices (V2V, V2I) uses so-called PC5 interface, interferes with WLANp |
| PCM | Platooning Control Message for truck platooning |
| PKI | Public Key Infrastructure |
| PCI | Pre-Crash Information |
| PI | Performance Indicator |
| PoTi | Positioning and Timing |
| PP | Protection Profile |
| Privacy | C-ITS message sets like CAM and DEMN are not encrypted as all road users have to understand the messages, for avoiding long-term tracking pseudonyms and schemes for changing the pseudonyms are used |
| PSM | Pedestrian protection with Personal Safety Messages (PSM) according to SAE J2735, SAE J2945/9_201703 |
| PTW | Powered Two-Wheelers, e.g. motorcycles and scooters |
| Radar | radio detection and ranging, electromagnetic sensor that measures relative distance and relative speed to a target |
| RFC | Request For Comments |
| RSU | Road Side Unit (ITS Station) |
| RWW | Road Works Warning (short term) |
| SAE | SAE International - Society of Automotive Engineers |
| SAE 1 to 5 | SAE driving levels from manually to fully automated driving |
| Security | Security in C-ITS deals mainly with trust and privacy, trust is ensured by authentication of senders and integrity protection of messages; privacy by ensuring confidentiality protection for communication with PKI |
| SCF | Store Carry Forward |
| SDO | Standards Developing Organisation |
| SHB | Single Hop Broadcast |
| SFR | Security Functional Requirement |
| SPaT | Signal Phase and Timing message of cooperative traffic lights according to ISO/TS 19091:2017 |
| SPATEM | Signal, Phase and Timing Extended Message [ISO/TS 19091 2019-06] |
| SSP | Service Specific Permissions |
| ST | Security Target |
| TAI | Temps Atomique International |
| TAL | Trust Assurance Level |
| TC | Traffic Class |
| TCC | Traffic Control Centre |
| TLM | Trust List Manager |
| TMC | Traffic Management Centre |
| Tier 1 / 2 / 3 | Automotive suppliers and engineering companies |
| Tolling | European Electronic Toll Service (EETS) is designed to enable the payment of tolls through a single contract with vehicles in free flow condition |
| TOE | Target Of Evaluation |
| TRCO | Triggering Conditions |
| TSF | TOE Security Functionality |
| TTC | Time To Collision |
| TTT | Transport and Traffic Telematics devices, a category in the short range device regulation |
| UTC | Coordinated Universal Time |
| UWB | Ultra Wide Band |
| VAM | VRU awareness message |
| vehicles | a. o. cars, vans, SUVs, trucks, busses, PTWs, agriculture, construction machines |
| VRU | Vulnerable Road User, e.g. (Motor-)Cyclist, Pedestrian, Blind or Impaired Persons |
| VRU2Car | Cooperative Vulnerable Road User-to-Vehicle communication based on ITS-G5 |
| V2I | Vehicle-to-Infrastructure communication, e. g. to ITS-S, RSU |
| V2P | Vehicle-to-Pedestrian communication |
| V2V | Vehicle-to-Vehicle communication |
| V2VRU | Vehicle-to-Vulnerable Road User communication |
| V2X | Vehicle-to-Anything communication |
| VANET | Vehicular Ad-hoc Network |
| VCS | Vehicle C-ITS Station |
| VRU | Vulnerable Road User, e.g. bicyclists, pedestrians, PTW |
| Vision Zero | Vision of traffic / mobility realisation without accidents |
| WAVE | U.S. implementation of DSRC based on IEEE 802.11p |
| WGS | World Geodetic System |
| WLANp | Other term for ad-hoc short-range communication based on IEEE 802.11p or extended IEEE 802.11bd |
| X2Car | Cooperative Anything-to-Vehicle communication based on ITS-G5 |