Home · Alphabetical Listing

Concept Registry

This page lists all known terms in the ITS Vocabulary.

name	description
access layer	communications layer that corresponds to the physical and data link layers of the OSI model
actuator	device with the capability to convert meaningful signals into changes to one or more properties of a material entity
ADS	driving automation system that is able to perform the entire dynamic driving task on a sustained basis
ADS-dedicated vehicle	ADS-equipped vehicle designed for only driverless operation for complete trips
ADS-equipped vehicle	vehicle integrated with an ADS
alley	road that has buildings, walls or fences on each side
anonymized vehicle reference	reference for a vehicle derived from vehicle properties such as registration number but encoded so that it does not allow a human to identify the vehicle directly from the encoded value
application entity	part of the ITS station reference architecture that is responsible for providing ITS-related functionality
application template	defined annotated outline for an ITS application specification
architecture	fundamental concepts or properties of a system in its environment embodied in its elements, relationships and in the principles of its design and evolution
architecture description	work product used to express an architecture
architecture framework	conventions, principles and practices for the description of architectures established within a specific domain of application and/or community of stakeholders
architecture model	work product representing one or more architecture views and expressed in a format governed by a model kind
architecture view	work product expressing the architecture of a system from the perspective of specific system concerns
architecture viewpoint	work product establishing the conventions for the construction, interpretation and use of architecture views to frame specific system concerns
area destination	area location, which is the destination of a defined route or itinerary
area location	spatial location enclosed within a two-dimensional boundary or boundaries across a defined surface
authentication	verification that a message was sent by the purported originator to the intended recipient and that the message was not changed in transit
authenticator	a network entity that executes an authentication process on a message
B2C mobility sharing app	mobility app that assists a transport user in acquiring a transport service from a specific business
bikesharing service	shared vehicle service that shares bicycles
biological entity	material entity that was or is a living organism
block-face	extent of sidewalk on one side of a street between two consecutive intersections crossing that street
bounded secured managed domain	abstract entity representing a managed processing and memory environment that provides protection from code and data that has not been determined to meet established security requirements
bridge	transport facility built over a gap to provide a continuous travel path
built-in vehicle input device	input device designed to be physically connected to a vehicle and to remain connected even when the vehicle is not in use
campus	jurisdictional area with a jurisdictional entity who is the owner of the area but excluding transport facilities managed by the local government
carriageway	contiguous area of paved roadway designed for the use of vehicles along a road segment
carsharing service	shared vehicle service that shares passenger cars
central reservation	part of the road reservation between carriageways designed for travel safety purposes
central system	ITS component that provides application, management, and/or administrative functions from a centralized location [i.e. not at the roadside]
class	set of ideas, abstractions or things in the real world that are identified with explicit boundaries and meaning and whose properties and behaviour follow the same rules
commercial	type of financial model where services are provided with a profit motive
communications view	architecture view from the communications viewpoint
communications viewpoint	architecture viewpoint used to frame concerns related to all layers of the Open Systems Interconnection (OSI) stack and related management and security issues
concern	interest in a system relevant to one or more of its stakeholders
concurrent	operational model where services can be provided to multiple users at any one time
connected	characteristic of a material entity that is equipped with enabled (i.e. on) and operational electronic communication technologies to support ITS services, including the means to send and receive data to and from other connected entities
connected unit	electronic device that is connected using one or more communication media
connected vehicle	vehicle that is connected using one or more communication media
connected vehicle roadside equipment	ITS roadside equipment that perform ITS services by exchanging electronic messages with nearby connected vehicles and/or personal systems via short-range wireless technologies
contractual model	legal framework for the agreement between a service provider and a user
control	measure that is modifying risk
conventional vehicle	vehicle designed to be operated by a person during part or all of every trip.
cooperative	type of financial model where users partner to defray the costs of services
cooperative ITS	subset of ITS where information is shared among ITS stations in a manner that enables its use by multiple ITS services [ITS service.md]
cooperative ITS credentials management system	support system that enables trusted communications among ITS components and protects data from unauthorized access
coordinate tuple	ordered list of numbers that jointly designate the position of a point
corporate customer model	contractual model where the user is a commercial entity
courier network service	commercial, peer-to-peer shared transport service that transports goods
cross-section	transverse view of road geometry
cryptography	discipline that embodies the principles, means, and methods for the transformation of data in order to hide their semantic content, prevent their unauthorized use, or prevent their undetected modification
cycle lane	lane designed for the through movement of cycles
cycleway	infrastructure primarily designed for the use of cycles and separate from a carriageway
data concept	data element, class, value domain, data frame, message or interface dialogue defined, at a minimum, with an unambiguous identifier and a definition
data concept registry	electronic data dictionary that follows precise documented rules for the registration and management of stored data concepts
data dictionary	collection of data concepts that allows lookup by entity identifier
data element	unit of data that is considered in a given context to be indivisible and which includes an unambiguous representational form
data flow	representation of data flowing between two process or between a process and a terminator
data frame	specific grouping of data elements that describes information of interest through a useful grouping of more atomic properties about one or more classes
data privacy	rights and obligations of individuals and organizations with respect to the collection, use, retention, disclosure and disposal of personal information
DDT performance-relevant system failure	malfunction in a vehicle system that prevents the driving automation system from reliably performing its portion of the dynamic driving task on a sustained basis
deployment architecture	architecture that provides a vision of a specific deployment of a system within a geographic area
design	the process or the result of the process to define the architecture, system elements, interfaces, and other characteristics of a system or system element
design speed	maximum speed at which a vehicle is intended to operate for a sustained period of time
designated parking space	parking space for a designated purpose Note 1 to entry: Note 2 to entry:
digital signature	data appended to a message, that allow the recipient of the message to verify the source of the message
disconnected	characteristic of a material entity that is or was equipped with communications equipment that is sufficiently physically disconnected such that the material entity is no longer able to send data to or receive data from connected entities
document	uniquely identified unit of information for human use
driver	person that is currently responsible for the dynamic driving task for the vehicle
driver support system	driving automation system that is only able to perform part of the dynamic driving task
driving automation system	hardware and software system that is able to perform part or all of the dynamic driving task on a sustained basis
driving space	area above the roadway that is primarily designed for the movement of vehicles
dual carriageway	having exactly two carriageways
dual-mode vehicle	ADS-equipped vehicle designed for both driverless operation and operation by a conventional driver for complete trips
duration	time between two instants
dynamic driving task	all real-time operational and tactical functions required to operate a vehicle in on-road traffic
dynamic route	concurrent operation where transported items can only be received or delivered at stopping points within a pre-defined service corridor
dynamic spatial reference	spatial reference generated on-the-fly based on geographic properties in a digital map database
egress lane	traffic lane designed for exiting a junction
egress link	all egress lanes on a road link
element	component member of an architecture model included in an architecture view
emergency management central system	centre system that allows an entity to manage and respond to crashes, events, disasters, evacuation orders and other incidents
enterprise object	element within an enterprise view that represents an organization or individual
enterprise view	architecture view from the enterprise viewpoint
enterprise viewpoint	architecture viewpoint used to frame the policies, funding incentives, working arrangements and jurisdictional structure that support the technical layers of the architecture
entity	concrete or abstract thing that exists, did exist, or can possibly exist, including associations among these things
environment	context determining the setting and circumstances of all influences upon a system
escalator	rising or falling stairway that assists pedestrians in vertical transitions
extend	relationship where one resource supplements another resource
facilities layer	communications layer in the ITS station reference architecture corresponding to the session, presentation and application layers of the OSI model
fallback	response by a person to perform the dynamic driving task or by an ADS to achieve a minimal risk condition when the response is triggered upon violation of the defined operational design domain constraints or in response to a dynamic driving task performance-relevant driving automation system failure
fallback-ready user	person who is able to operate the vehicle if the Level 3 ADS issues a request to intervene or if that person otherwise identifies a condition that requires intervention to perform the dynamic driving task
field support equipment	portable field system used by field personnel to locally troubleshoot, initialize, reprogram and test infrastructure equipment
field system	infrastructure-based ITS component located outside of a data centre that is designed to provide local processing or routing services while stationary
financial model	economic framework for the agreement between a service provider and a user
fixed route	concurrent operation where transported items can only be received or delivered at stopping points contained in a pre-defined sequence
fleet and freight management central system	centre system that allows a fleet or freight operator to manage and control its personnel, equipment and/or freight
footpath	area designed for the longitudinal movement of pedestrians
formal coordination	interaction between two enterprise objects governed by a documented agreement
fractional ownership	cooperative financial model where users partner to support the purchase, maintenance and overhead costs associated with a service
free-floating	network model where the transport service may be initiated and terminated at any spatial location meeting basic criteria
function	series of actions or activities performed by a given object to achieve a goal
functional object	set of related processes that are performed by a physical object to fulfil aspects of an ITS service
functional view	architecture view from the functional viewpoint
functional viewpoint	architecture viewpoint used to frame concerns related to the definition of processes that perform surface transport functions and data flows shared between these processes
gazetteer	register of spatial references of one or more spatial location sub-types containing some information regarding position
geographic descriptor	descriptor that identifies a geographic characteristic to help identify a specific location
geographic feature	abstraction of real-world phenomena
geographic identifier	spatial reference in the form of a label or code that identifies a location
geographic point location	well defined geographic place described by one coordinate tuple
government customer model	contractual model where the user is a governmental entity
governmental area	transport-related, jurisdictional area whose only jurisdictional entities are governmental entities
grade separated manoeuvre	manoeuvre that is vertically separated from one or more manoeuvres that cross its two-dimensional path
gross vehicle mass	operating mass (weight) of the vehicle according to legislation and/or regulations for the applicable region Note 1 to entry: Gross vehicle mass is often used to designate weight limits (e.g., on bridges).
gross vehicle mass rating	maximum operating mass (weight) of the vehicle, as determined by the vehicle manufacturer, at which the vehicle can be safely and reliably operated for its intended purpose
hard shoulder	part of the paved carriageway designed to support traffic loads but not normally intended for driving
hard shoulder for emergency use	operating mode of a hard shoulder that allows operation of emergency, construction, maintenance, or other special use vehicles or for emergency stopping and is prohibited for other vehicle usage
hard shoulder running	operating mode of a hard shoulder that allows operation of general-purpose motor vehicles as an extra lane [lane.md]
hardstanding	part of a paved carriageway that is not a traffic lane, hard shoulder, or lay-by.
high vehicle speed	speed of a vehicle that exceeds free flow motorway speeds by a factor of two or more
high-speed vehicle	vehicle with a design speed in the range of high vehicle speeds
immaterial entity	entity that does not occupy three-dimensional space
implementation	the process or the result of the process of translating a design into hardware components, software components, or both
in-vehicle driver	driver that performs the dynamic driving task using the vehicle's built-in input devices to control the longitudinal and lateral movement of the vehicle
include	relationship where one resource contains another resource
informal coordination	interaction between two enterprise objects governed by an understanding that is not documented in a formal agreement between the two parties
information flow	information that is exchanged between physical objects
information security event	occurrence indicating a possible breach of information security or failure of controls
information security incident	related and identified information security event(s) [information security event.md] that can harm an organization's assets or compromise its operations
information transfer	information flow from a physical object acting as an information provider and sent to another physical object acting as an information consumer
infrastructure descriptor	descriptor that identifies infrastructure to help identify a specific location
ingress lane	traffic lane designed for entering a junction
ingress link	all ingress lanes on a road link
instance	discrete, bounded object with an intrinsic, immutable, and unique identity
instant	0-dimensional geometric primitive representing position in time
intelligent transport system	system comprised of information, communication, sensor and control technologies and that is designed to benefit a surface transport system
interaction	element that represents coordination between two enterprise objects
interchange	junction with at least one grade separated manoeuvre
interface dialogue	bi-directional communication sequence between two parties in accordance with predetermined protocols
interoperability design	characteristics necessary to fully define how various physical objects interoperate to provide a service
intersection	space where two or more roads meet or cross
intersection manoeuvre	movement from an ingress lane to an egress lane
ISO named area	Note 1 to entry: ISO 3166-2 includes codes for major subdivisions of countries and states.
ITS application	requirements for an ITS service that involves an association of two or more complementary ITS-S application processes
ITS application role	ITS-SU user need expressed as a formal set of interoperability requirements that need to be fulfilled to satisfy a portion of functionality of an ITS application
ITS application specification	one or more documents that detail the interoperability design for an ITS application
ITS component	physical object that has been assigned one or more functional objects in the provision of one or more ITS services
ITS deployment	installation capable of performing one or more ITS applications
ITS deployment architecture	deployment architecture for one or more ITS services
ITS implementation	integration of each physical object necessary to implement one or more ITS applications
ITS on-board equipment	vehicle system that provides all ITS functionality on-board the vehicle
ITS on-board unit	part of on-board equipment that provides wireless connectivity to other ITS components external to the vehicle
ITS planning architecture	planning architecture for one or more ITS services
ITS reference architecture	reference architecture for one or more ITS services
ITS roadside equipment	field system that performs localized ITS services
ITS service	provision of functionality that fulfils one or more ITS user needs
ITS service provider	entity that delivers one or more ITS services
ITS station	bounded secured managed domain that is able to meet requirements of the ITS trust domain within which it is designed to participate
ITS trust domain	set of bounded secured managed domains that meet a defined set of ITS industry security requirements
ITS user	entity that uses information, communication, and transducer technologies to achieve benefits when using a surface transport system
ITS user need	user need for a surface transport system benefit that can be met with the use of information, communication, and transducer technologies
ITS-S access layer	communications layer in the ITS station reference architecture corresponding to the physical and data link layers of the OSI model for ITS communications
ITS-S application	ITS-S application process residing in the application entity
ITS-S application implementation	implementation of an ITS-S application process within the application entity
ITS-S application installation	ITS-S application process installation within the application entity
ITS-S application process	information manipulation within an ITS station for an ITS-SU service
ITS-S application process installation	installation of an implementation of an ITS-S application process on an ITS station
ITS-S communication unit	physical unit in an ITS-S unit containing part or all of the functionality of the ITS-S
ITS-S host	ITS-S node comprised of ITS-S functionalities other than the functionalities of an ITS-S router, ITS-S border router, ITS-S mobile router or an ITS-S gateway
ITS-S node	node comprised of a set of functionalities in an ITS-S unit that is connected to the ITS station-internal network or comprises an entire ITS-S unit
ITS-S reference architecture	reference architecture for handling communications within a physical object as defined in ISO 21217
ITS-S router	ITS-S node comprised of routing functionalities of an ITS station unit used to connect two networks and to forward packets not explicitly addressed to itself
ITS-S service	communication functionality of an ITS station that provides the capability to connect to other nodes
ITS-S unit	instance of an physical unit produced by an ITS station implementation
ITS-SU service	provision of functionality to fulfil an ITS-SU user need
ITS-SU service provider	ITS-SU that delivers one or more ITS-SU services
ITS-SU user	entity that has a need to perform processing within a bounded, secure, managed domain
ITS-SU user need	user need for processing within a bounded, secure, managed domain
Jersey barrier	physical traffic separator that consists of a wall with a wide, sloped base designed to divert vehicles back into their traffic lane
junction	-
junction at grade	junction without any grade separated manoeuvres
jurisdiction	legal power to issue rules of behaviour for a defined area
jurisdictional area	territory for which a jurisdictional entity has the power to define rules of behaviour
jurisdictional boundary	territorial limit associated with a jurisdictional area
jurisdictional entity	person or organization who has jurisdiction
kerb	physical traffic separator, usually upstanding, at the edge of a carriageway, hard strip, hard shoulder, or footway Note 1 to entry: "Curb" is the US spelling.
lane	portion of road reservation intended to accommodate a single line of moving material entities along its length
lane link	link that represents a lane of a road link
lane segment	link that represents a contiguous length of a lane link characterized by the same physical characteristics
lay-by	short length of paved carriageway at its edge designed to allow a vehicle to draw out of the traffic lanes and stop temporarily
level 1 driving automation	driver support system that provides either sustained lateral or sustained longitudinal vehicle motion control within a specific operational design domain with the expectation that a conventional driver completes the dynamic driving task
level 2 driving automation	driver support system that provides sustained lateral and longitudinal vehicle motion control within a specific operational design domain with the expectation that a conventional driver completes the object and event detection and response
level 3 ADS	ADS designed with the expectation that the fallback-ready user is available to intervene
level 4 ADS	ADS that is capable of operating within a specific operational design domain and providing its own fallback, without any expectation that a human driver will respond to a request to intervene
level 5 ADS	ADS that is capable of unconditional (i.e. not operational design domain-specific) operation and providing its own fallback, without any expectation that a human driver will respond to a request to intervene
linear location	spatial location that extends between two point locations along a defined path
link	component of a road model that represents a connection between two nodes
link location	pre-coded spatial reference defined within the road network database
loading area	area designated for vehicles to load and/or unload goods
location	particular place or position
location referencing	process used to develop a spatial reference
low vehicle speed	speed of a vehicle that exceeds pedestrian speeds and is more typical of pedal cycles
low-speed vehicle	vehicle with a design speed in the range of low vehicle speeds
maintenance and construction central management system	centre system that allows an entity to monitor and manage the construction and maintenance of road infrastructure
management entity	part of the ITS station reference architecture that is responsible for management and configuration of all layers and entities within the ITS-S
map provision system	support system that provides map databases used to support ITS services
material entity	entity that occupies three-dimensional space
membership-based	characteristic of a financial model that requires users to enter into an agreement prior to receiving services
message	grouping of data elements, data frames, or data elements and data frames that is used to convey information
meta-attribute	documenting characteristic of a data concept that is stored in a data dictionary
mobility app	ITS-S application implementation designed to assist an individual transport consumer in understanding transport-related information, making decisions, and/or acting upon decisions
model kind	conventions for a type of modelling
moderate vehicle speed	speed of a vehicle that exceeds moderately-low vehicle speeds but does not reach free-flow motorway speeds
moderate-speed vehicle	vehicle with a design speed in the range of moderate vehicle speeds
moderately high-speed vehicle	vehicle with a design speed in the range of moderately-high vehicle speeds
moderately low-speed vehicle	vehicle with a design speed in the range of moderately-low vehicle speeds
moderately-high vehicle speed	speed of a vehicle that is typical of free-flow motorway speeds to twice that speed
moderately-low vehicle speed	speed of a vehicle that exceeds speeds typical of pedal cycles but can be reached on performance pedal cycles in short bursts or by performance riders
module	functional object that can be replaced and has defined interfaces
motor	material entity that converts energy into mechanical motion
motor vehicle	motorized road vehicle allowed to operate in the same driving spaces as motorized passenger cars
motorized vehicle	self-propelled vehicle
motorway	road with separate carriageways for each direction, with limited access that prevents cross traffic on the same level, and for the exclusive use of certain classes of motor vehicles
movable bridge	bridge with a deck that can be moved in a way that disrupts the continuous travel path
moving walkway	footpath consisting of a conveyor belt for pedestrians Note 1 to entry: Moving walkways are often used in airports with long footpaths Note 2 to entry: Moving walkways assist pedestrians in traversing longer distances. Note 3 to entry: "Travellator" is a term used in Singapore.
multiple carriageway	having more than one carriageway
mutual benefit	cooperative financial model where users partner on a per-use basis
navigation app	mobility app that assists a transport user to determine the best route to a destination
network location	point or linear location on a network
network model	infrastructure framework for the agreement between a service provider and a user
node	component of a road model representing a point location of the road network graph
nomadic device	personal information device that is taken with and can be accessed by the traveller during a journey
nomadic vehicle device	personal system consisting of global navigation satellite system (GNSS) and/or wireless modules that are connected to a vehicle during a trip
nomadic vehicle input device	input device that can be carried into, or in near proximity of, a vehicle and connected as desired
non-biological entity	material entity that is not and has never been a living organism
non-repudiation	ability to prove the occurrence of a claimed event or action and its originating entities
non-road cycle	human-powered vehicle not meeting the legal requirements to be driven in cycle lanes
non-road vehicle	vehicle not meeting the legal requirements to be driven in traffic lanes or cycle lanes of a road network
objective	result to be achieved
off-grid	characteristic of a material entity that is currently unable to send data to or receive data from connected entities
open-access	characteristic of a financial model that does not require membership within an organization to receive services
operational design domain	set of operating conditions under which a given driving automation system or feature thereof is specifically designed to function
operational model	logistical framework for the agreement between a service provider and a user
P2P mobility sharing app	mobility app that assists a transport user in acquiring transport service from an individual that participates in the mobility app's network
paired on-demand	concurrent operation where the transport provider may choose to divert from its path to service a new request from another transport users while servicing an earlier transport user
parking space	location for storing a vehicle Note 1 to entry: The vehicle can be a motor vehicle, cycle, or any other type of vehicle. Note 2 to entry: A parking space is usually designed for a single vehicle. Note 3 to entry: Parking spaces can be, but are not necessarily, denoted by painted or other road surface markings.
parking space for permit holders	designated parking space that requires a special permit from an appropriate authority
passenger	person who has a reservation to travel or is travelling in a vehicle except for any crew, staff or drivers
payment administration central system	centre system that allows an entity to manage financial transactions related to transportation, especially the electronic transfer of funds
payment means	financial instrument accepted by the service provider, that gives the user the right to use provided services
payment mode	timing and location of remuneration for services including whether the payment is required prior to, at the time of or post access to the service or commodity
pedestrian	person who is travelling on foot
pedestrian crossing	physically marked location to enhance the safety of pedestrians crossing one or more lanes of a different mode of travel
peer-to-peer	private customer model where the service provider is an individual
person	biological entity that is a human being
personal information device	personal system that enables personal access to traveller information
personal system	ITS component, other than a vehicle system, that is used by a person in relation to a past, current or upcoming journey
physical object	abstraction of a material entity that interacts with other abstract material entities in the provision of ITS services
physical traffic separator	mechanism used to physically separate a travelled way or pathway from the adjacent environment
physical view	architecture view from the physical viewpoint
physical viewpoint	architecture viewpoint used to frame concerns related to the assignment of functionality to physical objects and the interfaces among these physical objects
pick-up/drop-off area	area intended to allow passengers to board and/or alight from vehicles
planning architecture	architecture that provides a long-term vision of system elements that may be deployed and managed by different projects and/or entities within a geographic area
point coordinates	coordinate tuple defining the geodetic position of a single point location using a known geodetic reference system
point destination	point location, which is the destination of a defined route or itinerary
point location	spatial location with no length in any of the spatial dimensions
pre-coded spatial reference	spatial reference using a unique identifier that is agreed upon in both the sender and receiver system to select a location from a set of pre-coded locations
private	financial model where services are provided to members of the owning organization without usage fees
private customer model	contractual model where the user is an individual
process	series of one or more functions in support of an ITS service
process specification	document that defines a lowest-level process
protected road user	road user who is protected by the body of a motor vehicle that meets local safety regulations
public	type of financial model where services are provided by an administrative authority in an attempt to better serve societal interests
public information device	personal system that provides public access to traveller information
public transport	transport service that is publicly accessible enabling the movement of one or more persons
public transport app	mobility app that assists a transport user in using a public transport system
public transport central management system	centre system that allows an entity to manage the activities of a public transport agency
public transport vehicle stop	pick-up/drop-off area area for public transport vehicles
real-time traveller information app	mobility app that provides information about current travel conditions to a transport user
realization	implementation of a system concept
reference architecture	architecture that provides a template solution for planning and deployment architectures
relationship	element that represents an association between two resources
remote driver	driver that performs the dynamic driving task without using the vehicle's built-in input devices to control the longitudinal and lateral movement of the vehicle
remote vehicle input device	input device designed to be electronically connected to a vehicle even when the vehicle is not in close proximity
requirement	provision that contains criteria to be fulfilled
requirements specification	document that specifies the requirements for a system or component
reserved lane	traffic lane restricted to a specific subset of road vehicles or user categories
resilience	capability of a system to maintain its functions and structure in the face of internal and external change, and to degrade gracefully when this is necessary
resource	element that represents an entity that is managed, operated, referenced and/or used to develop and provide ITS
rideshare service	cooperative shared transport service that transports passengers concurrently
ridesourced service	commercial, peer-to-peer shared transport service that transports passengers
ridesourcing app	P2P mobility sharing app for acquiring a ridesourced service
ridesplit service	ridesourced service that serves passengers concurrently
risk	effect of uncertainty on objectives
road	curvilinear length of roadway that shares the same road identifier
road cycle	vehicle meeting the legal requirements to operate in cycle lanes and cycleways
road equipment	component of transport infrastructure along the roadway intended to contribute to the safety, operations, management, awareness, and comfort of movements of the road users
road identifier	designator by a road authority to uniquely identify one or more curvilinear lengths of roadway within the context of the road authority
road link	link representing a contiguous length of a road between two nodes of operational or managerial significance
road model	representation of a road network
road network	interconnected collection of roads
road reservation	area legally reserved for road transport purposes and support
road section	aggregation of one or more road links that represents a contiguous length of a road that shares the same management and operational strategies
road segment	link that represents a contiguous length of a road link characterized by the same physical characteristics
road user	mobile material entity within the road reservation
road vehicle	vehicle meeting the requirements to operate within the driving space of a road
roadside	portion of the road reservation excluding all roadway and driving space
roadside unit	part of connected vehicle roadside equipment that provides wireless connectivity to vehicle systems and/or personal systems
roadway	part of the surface of the road reservation primarily designed for the movement of vehicles that conform to a specified set of requirements
role	element that represents the specified responsibilities between an enterprise object and another enterprise view element
scenario	description of the sequence of events from the user's perspective to perform a task in a specified context
security entity	part of the ITS station reference architecture that is responsible for providing communication security and system security
sensor	device with the capability of observing one or more properties of a material entity and converting those properties into meaningful signals
sequential	operational model where services are provided to a single user at any one time
service	provision of one or more capabilities, functionalities or facilities to fulfil or enable the fulfilment of a user need
service alley	alley designed to facilitate the provision of services for adjacent locations
service provider	entity that delivers one or more services
service road	road designed to facilitate the provision of services to customers
shared space	public area space for use by users with distinctly different characteristics
shared transport service	transport service that relies upon the same resources to fulfil the transport needs of multiple unrelated transport users and where the transport provider has the primary responsibility for the operation of the transport mode
shared vehicle service	transport service that sequentially provides the same vehicles to multiple unrelated transport users and where the transport user has the primary responsibility for the operation of the vehicle
shoulder	either a hard shoulder or a soft shoulder
shuttle service	shared transport service that transports passengers between two specified spatial locations
sidewalk	footpath along a roadside
single carriageway	having exactly one carriageway
soft shoulder	unpaved part of the road reservation not belonging to the carriageway but providing lateral support to it
spatial location	location within three-dimensional space
spatial reference	description of a spatial location in the real world according to a defined reference system
speed	rate of change of a material entity's position with respect to a frame of reference
stakeholder	individual, team, organization, or classes thereof, having an interest in a system
station-based one-way	operational mode where the transport service is initiated and terminated at two different facilities managed by the transport provider
station-based roundtrip	operational mode where the transport service is initiated and terminated at the same facility managed by the transport provider
support system	ITS component that provides services in support of one or more other ITS components
surface transport system	transport system designed to move material entities across the surface or near-surface of the Earth
system	combination of interacting elements organized to achieve one or more stated purposes
taxi hailing app	mobility app that assists a transport user in electronically requesting a taxi
taxi service	commercial shared transport service that transports passengers sequentially
taxi-share service	commercial shared transport service that transports passengers concurrently
terminator	entity that is external to the ITS service implementation but with which the implementation communicates either to obtain inputs or to which it can send outputs
threat	potential cause of an unwanted incident, which can result in harm to a system or organization
traffic control device	road equipment used to visually, audibly, or tangibly convey regulatory, advisory, or guidance information to road users
traffic lane	portion of carriageway designed to accommodate a single line of moving road vehicles
traffic management central system	centre system that monitors and controls traffic and the road network
traffic regulation central system	centre system that officially records traffic regulations in electronic form so that they can be distributed to other systems
transnet layer	communications layer in the ITS station reference architecture corresponding to the network and transport layers of the OSI model
transparency	open, comprehensive and understandable presentation of information
transport facility	physical structure or installation, including related site works, serving one or more transport-related purposes
transport information central system	centre system that provides information of interest to the travelling public
transport infrastructure	system of transport facilities and equipment needed for a transport system
transport provider	entity that delivers one or more transport services
transport service	service that transports one or more material entities from one spatial location to another
transport sharing	using a shared transport service
transport system	system of infrastructure elements and optionally vehicles that are jointly designed to move material entities from an origin to a destination
transport user	entity that has a desire to transport a material entity
transport user need	user need to transport one or more material entities to a different spatial location
travelled way	part of the roadway that is currently intended for transport purposes
traveller	person who is headed to a destination
trip aggregator app	mobility app that assists a transport user in planning trips that may span multiple vehicle modes or transport providers
trustworthiness	ability to meet stakeholders expectations in a verifiable way
ultra-low vehicle speed	speed of a vehicle that does not greatly exceed typical pedestrian speeds
ultra-low-speed vehicle	vehicle with a design speed that does not exceed ultra-low vehicle speeds
unconnected	characteristic of a material entity that is equipped with communications equipment that is not active or is otherwise unable to send data to or receive data from connected entities
unequipped	characteristic of a material entity that is not and has never been equipped with communications equipment for sending data to or receiving data from connected entities
usable width	all traffic lanes of a carriageway
use case	description of the behavioural requirements of a system and its interaction with a user
user	entity for whom the system of interest is designed
user need	desired results of a user within a specified context of use
value domain	a set of permissible values
vehicle	material entity designed to transport people or physical goods by changing its physical position
vehicle equipment	type of equipment in use or on board the vehicle
vehicle fuel type	type of fuel used by the vehicle
vehicle identifier	series of 17 characters that is based on either ISO 3779 or ISO 3780 and uniquely identifies the individual vehicle and is normally securely attached to the vehicle chassis
vehicle input device	material entity that can affect the vehicle's operation
vehicle load type	type of load carried by the vehicle
vehicle occupant	person in or on a vehicle
vehicle registration plate identifier	numeric or alphanumeric identifier or code, displayed on a registration plate attached to the vehicle, and unique within the issuing authority's region therefore usable for official identification purposes
vehicle sharing	using a shared vehicle service
vehicle system	ITS component that is installed as a component of a vehicle
verge	unpaved part of the roadside designed for travel safety purposes
vulnerability	weakness of an asset or control that can be exploited by one or more threats
vulnerable road user	road user who is not protected by the body of a motor vehicle that meets local safety regulations
wheel	circular material entity that rotates about an axle to facilitate movement of the vehicle

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