Results for area 1.7 ITS components and systems
US standard developed by APTA for introducing advanced ITS technologies into PT to improve safety, security, and efficiency
mobility app that assists a transport user in using a public transport system
NOTE 1 to entry A public transport app can include features such as viewing maps, searching routes and schedules, real-time arrival information, ticketing, electronic boarding pass, etc.
mobility app that provides information about current travel conditions to a transport user
ITS component that provides application, management, and/or administrative functions from a centralized location [i.e. not at the roadside]
computer or network that meets the requirements of a standardized communications interface over a fixed-point communications network, regardless of whether the centre is the only system within the building or just one of many, or even if the centre is in a remote location
NOTE 1 to entry “Centres” include both government and private sector publishers and users of data.
entity that provides application, management, administrative, and support functions from a fixed
location (the terms “back office” and “centre” are used interchangeably)
NOTE 1 to entry Centre is, traditionally, a transportation-focused term, evoking management centres to support
transportation needs, while back office generally refers to commercial applications; from the perspective of this
Technical Report, these are considered the same.
the central system that controls the functions of traffic data collection, signal control, and information service based on collected data, etc.
device on-board a commercial vehicle used to record driver information such as hours of service
part of a traffic signal cycle during which, signal indications are stable and do not change
NOTE 1 to entry In the SPaT message, the current timing value for the remaining interval time estimate, as well as the anticipated interval for yellow change (clearance) interval, is provided for each lane.
NOTE 2 to entry Because signal interval times commonly change based on triggering events in many types of signalling systems, the value provided in the SPaT message may represent a minimal value that is extended and updated as the message is re-transmitted in real time.
dynamic information related to traffic signal-controlled intersections belonging to a road network.
part of connected roadside equipment that provides wireless connectivity to vehicle systems and/or personal systems
system that receives and processes vehicular and pedestrian information within a certain zone and determines the situation, in order to provide the safety warning and parking guide service to vehicles and pedestrians, and that is installed at the road side
infrastructure-based ITS component located outside of a data centre that is designed to provide local processing or routing services while stationary
EXAMPLE Traffic detector, camera, signal controller, message sign, tolling station.
NOTE 1 to entry Typically, field systems are located along the roadside.
NOTE 2 to entry Typically, the operation of a field system is governed by management functions running in a centre system.
NOTE 3 to entry Field systems can be permanently installed or transportable.
Note 4 to entry The term “roadside system” is typically used to describe field systems along a roadside but can also be used to refer to kiosks.
vehicle ITS station implementation of an ITS-S in a vehicular ITS subsystem
field system that performs localized ITS services
EXAMPLE traffic signal controller, variable message sign, vehicle detection
NOTE 1 to entry ITS services that can be performed by ITS roadside equipment include surveillance, traffic control, information provision, payment transaction services, and/or enforcement
NOTE 2 to entry “ITS roadway equipment” is used within the current version of the Architecture Reference for Cooperative and Intelligent Transportation (ARC-IT; see Reference [25]). The term roadway has been revised to reflect that the equipment is typically along the roadway rather than a part of the roadway.
roadside equipment that communicates with the in-vehicle units and the roadside units, e.g. beacons and antennas
lamp that is implemented on the dashboard or nomadic device to guide the driver to drive the vehicle in the most economical way
EXAMPLE A green lamp/symbol will indicate high fuel efficiency driving or travelling at a constant speed while a red lamp/symbol will indicate low fuel efficiency, i.e. strong acceleration, sudden braking.
terminal units controlled or monitored by a traffic management centre
NOTE Roadside modules are usually installed at the roadside arena.
mobility app that assists a transport user to determine the best route to a destination
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.
order of appearance of signal indications during successive periods of a traffic signal cycle
term commonly associated with the standard for incident phrases developed by the SAE ITIS committee in conjunction with ITE TMDD and other standards
NOTE 1 : The ITIS documentation contains a wide variety of standard phrases to describe incidents and is expected to be used throughout the ITS industry. The codes found there can be used for sorting and classifying types of incident events, as well as creating uniform human readable phrases. In the capacity of classifying incident types, ITIS phrases are used in many areas. ITIS phrases can also be freely mixed with text and used to describe many incidents.
also known as Tracing is the process that periodically updates the range and direction of the detected vehicle from an intercepting vehicle over a period of time; thus allowing entitled personnel to approach or intercept the detected vehicle without the necessary use of landmarks or absolute geographic references
implementation of an ITS station in a personal ITS subsystem
NOTE 1 to entry Personal ITS station is used to send the information of each user (drivers and pedestrians) to the roadside ITS station, and receives the safety warning and parking guide service and transfers them to the users.
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.
signal face displaying signal indications to permit or prohibit the use of specific lanes of a roadway or to indicate the impending prohibition of such use
NOTE 1 to entry Typically, these are arrow displays of varying colours.
NOTE 2 to entry This document does not attempt to use signal colours/indications to reflect the allowed vehicle operation, rather, the permitted movements are indicated and the state of the movement as explained later herein. Each region has unique mechanisms for using the display signals to indicate the movement(s) allowed.
geo-physical area of an intersection used for an approaching vehicle to request a pre-empt or priority request of a traffic signal
illumination of a signal lens or equivalent device
set of traffic signals providing a signal indication that governs the vehicle/pedestrian/bicycle manoeuvres possible for a set of one or more lanes
ITS roadside equipment that perform ITS services by exchanging electronic message with nearby vehicle systems and/or personal systems via short-range wireless technologies
NOTE 1 to entry Connected roadside equipment typically provides ITS-related functionality but the term includes roadside equipment that only provide the ITS service of routing for short-range wireless technologies.
NOTE 2 to entry The term “connected vehicle roadside equipment” is used within the current version of the Architecture Reference for Cooperative and Intelligent Transportation (ARC-IT).
ITS-station and connected equipment on board a vehicle; hardware, firmware and software on board a vehicle that provides a platform to support C-ITS service provision, including that of the ITS-station, the facilities layer, data pantry and onboard ‘apps’
collection, collation, and transfer of emergency message data from an in-vehicle system to an application service provider
ITS component, other than a vehicle system, that is used by a person in relation to a past, current or upcoming journey
sender unit mounted to a vehicle gearbox, a tachograph head and a digital driver card, which records the regulated vehicle speed and the times at which it was driven and aspects of the driver’s activity selected from a choice of modes
the invehicle equipment that transmits/receives information to/from the Roadside Communication Units and, in some cases, outputs information on its screen, etc.
enables the control of IVMS by the board controller of the Vehicle Board Information and Control System (VBICS)
ITS component that is installed as a component of a vehicle
roadside equipment that communicates with the roadside units such as the signal controllers and the in-vehicle units
signal phase that stops vehicular manoeuvres and allows pedestrian manoeuvres to exclusively occur across the intersection including diagonally moving between corners
NOTE 1 to entry Also referred to as a scramble, or “X” crossing. The term refers to Henry Barnes, a deceased traffic engineer.