ISO 20529-2:2021

INTERNATIONAL ISO
STANDARD 20529-2
First edition
2021-11
Intelligent transport systems —
Framework for Green ITS (G-ITS)
standards —
Part 2:
Integrated mobile service applications
Systèmes intelligents de transport - Cadres de référence pour les
normes ITS vertes (G-ITS) —
Partie 2: Applications de services mobiles intégrés
Reference number
© ISO 2021
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ii
Contents Page
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms, definitions, symbols and abbreviated terms . 1
3.1 Terms and definitions . 1
3.2 Abbreviated terms . 2
4 Document overview and structure . 3
5 General information . 3
5.1 Purpose of this document . 3
5.2 Overview of G-ITS services . 3
6 Use case overview and definitions . 5
6.1 Use case overview. 5
6.1.1 Basic principles for use cases . 5
6.1.2 Use case clusters . 5
6.2 Use case definition . 7
6.2.1 Service applications 1: Route selection . 7
6.2.2 Service applications 2: Passenger-car-based . 11
6.2.3 Service Applications 3: Non-passenger-car-based . 19
7 G-ITS data exchange format .20
7.1 Schedule-Info-Edit . 20
7.1.1 Definition .20
7.1.2 Example . 21
7.2 Schedule-Info-Req . 22
7.2.1 Definition . 22
7.2.2 Example . 23
7.3 Schedule-Info . 23
7.3.1 Definition . 23
7.3.2 Example . 24
7.4 Route-Plan-Req . 25
7.4.1 Definition . 25
7.4.2 Example . 26
7.5 Route-Plan-Info . 27
7.5.1 Definition . 27
7.5.2 Example .29
7.6 Route-Pub-Req . . 32
7.6.1 Definition . 32
7.6.2 Example . 33
7.7 Route-Pub-Res .34
7.7.1 Definition .34
7.7.2 Example . 36
7.8 Carbon-Free-Info .38
7.8.1 Definition .38
7.8.2 Example .40
7.9 Mobile-Card-Edit. 41
7.9.1 Definition . 41
7.9.2 Example . 41
7.10 Eco-Driving-Info . 42
7.10.1 Definition . 42
7.10.2 Example . 43
7.11 Eco-Driving-Res .44
7.11.1 Definition .44
iii
7.11.2 Example . 45
7.12 Eco-Traffic-Info .46
7.12.1 Definition .46
7.12.2 Example . 47
7.13 Eco-Weather-Info .49
7.13.1 Definition .49
7.13.2 Example .50
7.14 Eco-Accident-Info . 52
7.14.1 Definition . 52
7.14.2 Example . 52
7.15 Route-Navi-Req . 53
7.15.1 Definition . 53
7.15.2 Example .54
7.16 Route-Navi-Info . .55
7.16.1 Definition . 55
7.16.2 Example .56
7.17 Parking-Lot-Info . 57
7.17.1 Definitions . 57
7.17.2 Example . 59
7.18 Parking-Ride-Info.60
7.18.1 Definition .60
7.18.2 Example . 61
7.19 User-Response. 62
7.19.1 Definition . 62
7.19.2 Example .63
Bibliography .64
iv
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
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electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
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on the ISO list of patent declarations received (see www.iso.org/patents).
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www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 204, Intelligent transport systems.
A list of all parts in the ISO 20529 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
v
Introduction
Work by ISO/TC 204 on nomadic and portable devices for intelligent transport systems (ITS) services
is defined to facilitate the development, promotion and standardization of the use of nomadic and
portable devices to support ITS service provision and multimedia use (such as passenger information,
automotive information, driver advisories and warning systems and entertainment system interfaces)
to ITS service providers and motor vehicle communication networks. This document fosters the
introduction of multimedia and telematics nomadic devices in the public transport and the automotive
world.
vi
INTERNATIONAL STANDARD ISO 20529-2:2021(E)
Intelligent transport systems — Framework for Green ITS
(G-ITS) standards —
Part 2:
Integrated mobile service applications
1 Scope
This document provides information and requirements for identifying cost-effective technologies and
related standards required to deploy, manage and operate sustainable “green” ITS technologies in
surface transportations with eco-mobility. These ITS technologies can increase operational efficiencies
and unlock enhanced transportation safety and eco-mobility applications.
The ISO 20529 series builds on the existing standards and best practices of transport operation and
management systems, as well as ITS applications, and aims to accommodate the specific needs of eco-
mobility.
G-ITS standards are expected to focus on the use of data exchange interface standards to enable the
deployment of cloud-based multi-modal mobility solutions using wireless networks and nomadic
devices. These forward-looking solutions are “infrastructure light” and can thus impact developing
regions with little or no legacy transportation infrastructure.
This document is intended to provide mobility information according to user preference on demand,
utilizing a variety of existing apps on nomadic devices related to various means of transport. An
integrated mobility information platform is defined in this document as a service methodology to be
integrated with a variety of mobile apps with respect to different modes of transport.
The framework described in this document includes:
— Identification of implementation aspects of related standards by means of use case.
— Identification of the multi-modal transport information necessary to support G-ITS.
— Eco-friendly route guidance according to user preference.
— Smart modal choice service based on carbon footprint, fuel efficiency and carbon-free zones for
G-ITS.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 14817-1, Intelligent transport systems — ITS central data dictionaries — Part 1: Requirements for ITS
data definitions
3 Terms, definitions, symbols and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1.1
nomadic device
ND
implementation of a personal ITS station (3.1.2) which provides communication connectivity via
equipment such as cellular telephones, mobile wireless broadband (WIMAX, HC-SDMA, etc.) or WiFi,
and includes short range links, such as Bluetooth or Zigbee to connect portable devices to the motor
vehicle communications system network
[SOURCE: ISO 18561-1:2020, 3.1.1]
3.1.2
personal ITS station
P-ITS-S
implementation of an ITS station in a personal ITS subsystem
[SOURCE: ISO 18561-1:2020, 3.1.2]
3.1.3
roadside ITS station
R-ITS-S
system installed at the roadside that receives and processes vehicular and pedestrian information
within a certain zone and determines the situation in order to provide a safety warning and parking
guide service to vehicles and pedestrians
[SOURCE: ISO 18561-1:2020, 3.1.3]
3.1.4
Green ITS
G-ITS
new-concept transportation system expected to arise following the paradigm shift toward eco-friendly,
low-carbon green growth as global policies in the transportation sector
[SOURCE: ISO 18561-1:2020, 3.1.4, modified — added “in the transportation sector”.]
3.1.5
eco-mobility
eco-transport systems and services based on eco-vehicles and their related facilities
[SOURCE: ISO 18561-1:2020, 3.1.5]
3.1.6
central ITS station
ITS station assuming a central role
[SOURCE: ISO 18561-1:2020, 3.1.6]
3.1.7
eco-mileage
incentive given to transport users who voluntarily cut back on fossil fuels in utilizing transportation
modes
3.2 Abbreviated terms
ASN.1 abstract syntax notation one
C conditional
Cvt convention (M, O, C, S)
M mandatory
MaaS mobility as a service
MoD mobility on demand
O optional
S structure
WiFi wireless fidelity
WIMAX worldwide interoperability for microwave access
4 Document overview and structure
This document provides all documents and references required to support the implementation of the
requirements related to standardized access to the framework for green ITS (G-ITS) personal ITS
stations. The ISO 20529 series consists of the following documents:
— Part 1: General information and use case definition
This part provides an overview of the ISO 20529 series and document structure along with the
use case definition and common set of resources (definitions, references), which are used for all
subsequent parts.
— Part 2 (this document): Integrated mobile service application and specification
This document specifies all technical requirements related to the integrated mobile service
application for G-ITS to be used on the personal ITS station and to be interfaced with the central
ITS station, vehicle ITS station and roadside ITS station. The requirements reflect the user services
from the use cases as specified in the relevant sections of ISO 20529-1. The protocol shall be defined
according to the requirements as specified in ISO 14817-1.
5 General information
5.1 Purpose of this document
This document addresses three major areas:
— Identification of the requirements of application level framework for green ITS (G-ITS) services,
that can be frequently inserted, modified and deleted;
— Identification of the method to describe the general information for all subjects related to G-ITS
services on the personal ITS station interfaced with the central ITS station, vehicle ITS station, and
roadside ITS station;
— Specification of the general use cases that should be included for the G-ITS services.
5.2 Overview of G-ITS services
The document mainly describes eco-mobility services, eco-information, navigation and guidance.
ISO/TC 204 plans to develop standards, specifications and informational reports for central and local
government officials who intend to manage and operate green ITS in their respective cities with eco-
mobility.
Examples include the delivery and management of ITS services using wireless networks and personal
nomadic devices, as well as the use of commercial off-the-shelf technologies and services, such as
smartphone apps for public transit route planning and obtaining road congestion information for use
by traffic management centres and personal route planning, etc.
The green ITS standard framework will build on the existing standards and best practices in transport
operation and management systems and ITS applications, but will be customized to accommodate the
specific needs of eco-mobility in countries and cities. This includes:
— the surveying and identification of appropriate ITS technologies and corresponding standards
required to deploy eco-mobility systems and services and infrastructure in the cities;
— the identification of gaps and proposed revisions/amendments to existing standards where
appropriate; and
— the development of a standard framework for the deployment and management of green ITS
standards.
As increased urbanization and traffic congestion contribute to climate change and impact on the quality
of life and economic activities in many cities, ITS hold the promise of a better future. The challenges of
G-ITS standards are:
— the creation of a mobility ecosystem where consumers can avail themselves of various mobility
services through the use of mobile applications or web interfaces through nomadic devices that can
allow them to plan, travel and pay for mobility services that best fit their needs;
— the evolution of transportation in regions from an isolated, stove-piped network of public transit,
toll, parking, taxi, and other transportation services to a more integrated, multi-modal, convergence
of publicly delivered and privately delivered mobility services;
— addressing the new mobility ecosystem in grass roots partnerships between public transport
and shared mobility services, as well as through mobile mobility and demand management application
providers that provide multi-modal trip planning, targeted traveller information, and increasingly,
payment.
6 Use case overview and definitions
6.1 Use case overview
6.1.1 Basic principles for use cases
Basic use cases are separated into two steps:
a) making a choice of routes according to user preference;
b) deciding on a mode of transport, either by passenger car or not (modal choice).
The G-ITS services shall include the following group of use cases:
Figure 1 — Use case overview
Route choices are based on user preferences, including personal trip schedule and plans, previous route
selections, mobile all transit or mobility on demand, carbon-free zone, etc.
Modal choices include either taking a passenger car from the beginning of a personal trip, including
park and ride with public transport for a connection, or else riding public transit including car sharing,
etc. from the beginning of the trip.
6.1.2 Use case clusters
Table 1 provides an overview of the different use case categories.
Table 1 — Use case clusters and associated use case overview
Title of use Brief description
case cluster
1.  Route Route choice service based on user preference according to personal trip schedule
selection and plans, and a variety of mobility information from central ITS stations such as
mobile all transit or mobility on demand, carbon-free zone, etc.
Route — UC 1.1 – User schedule interworking
selection
— UC 1.2 – Route plan (based on traffic information)
— UC 1.3 – Carbon-free zones information
— UC 1.4 – Mobile all transit
2.  All-day Modal choice service of taking a passenger car all day from the beginning of a per-
driving sonal trip.
— UC 2.1 – On-trip eco-driving support
Passenger-
car-based — UC 2.2 – Route guidance and navigation
— UC 2.3 – Variable parking charging
— UC 2.4 – Variable area/road access charging
3.  Driving Modal choice service of taking a passenger car from the beginning of a personal trip
and public and transferring to public transport after park and ride.
transporta-
— UC 3.1 – On-trip eco-driving support
tion
— UC 3.2 – Route guidance and navigation
— UC 3.3 – Variable parking charging
— UC 3.4 – Park and ride guidance
Passenger-
— UC 3.5 – Personalized multi-modal navigating
car-based
4.  Driving Modal choice service of taking a passenger car from the beginning of personal trip
and car and transferring to shared mobility such as car sharing, ride sharing, etc.
sharing
— UC 4.1 – On-trip eco-driving support
— UC 4.2 – Route guidance and navigation
— UC 4.3 – Variable parking charging
— UC 4.4 – Variable area/road access charging
5.  All-day Modal choice service of taking public transit all day including bus, subway, etc.
public trans-
— UC 5.1 – Park and ride guidance
portation
— UC 5.2 – Personalized multi-modal navigating
6.  All-day Modal choice service of taking shared mobility all day including car sharing, ride
car sharing sharing, etc.
— UC 6.1 – On-trip eco-driving support
— UC 6.2 – Route guidance and navigation
— UC 6.3 – Variable parking charging
Non-passen-
ger- car-based
— UC 6.4 – Variable area/road access charging
7.  Public Modal choice service of taking a combination of public transport such as bus, tram,
transporta- subway, etc. and shared mobility, such as car sharing, ride sharing, etc.
tion and car
— UC 7.1 – On-trip eco-driving support
sharing
— UC 7.2 – Route guidance and navigation
— UC 7.3 – Variable parking charging
— UC 7.4 – Park and ride guidance
— UC 7.5 – Personalized multi-modal navigating
6.2 Use case definition
6.2.1 Service applications 1: Route selection
6.2.1.1 UC Cluster 1: Route selection
6.2.1.1.1 Introduction
Figure 2 shows the route selection service flow for use case cluster 1.
Figure 2 — Route selection service flow
6.2.1.1.2 User schedule interworking
Table 2 shows the definition and message set for user schedule interworking, in order to navigate and
guide by intermodal journey planning.
Table 2 — UC 1.1 User schedule interworking
Use case Cluster 1. Route selection
Name UC 1.1 — User schedule interworking
Brief description Intermodal journey planning involves using two or more transport modes in a
journey. Travellers can choose a smart way to complete the trip by taking the
options of a variety of intermodal journey plans that have been devised to help
travellers to plan and schedule their route guidance, where they reduce depend-
ence on driving vehicles as the major mode of ground transportation and increase
the use of public transport.
This information shall include:
—  Intermodal journey planning information
—  Eco-route guidance and journey planner
Actor Public transport provider, nomadic device
Goal Eco-information, navigation and guidance by intermodal journey planning
Input Intermodal journey planning information
Output Eco-route guidance and journey planner
Processing steps 1)  User (traveller) inputs a new day trip schedule or updates the existing schedule
to save it by setting alarms.
2)  User enquires about his/her existing schedule using a search condition.
3)  Server sends search results corresponding to the schedule requested to the
user.
4)  Server pushes alarm service to user on time according to schedule in case
of a request by user.
5)  User chooses one option from “cancel”, “change”, or “confirm”.
6)  Server applies one of the following options based on the user selection:
a)  In case of “cancel”, reset the values of status minimal.
b)  In case of “change”, move to screen to update the schedule.
c)  In case of “confirm”, request reset the values of status to be minimal.
7)  If the user confirms, the server sends an anticipated way of travel based on
the schedule.
Message Step No. Name Subclause Exe Description
Standardized format of schedule to
1) Schedule-Info-Edit 7.1 P-ITS-S be edited and registered by users to
the server.
Keyword to search the schedule of
2) Schedule-Info-Req 7.2 P-ITS-S
users.
3) Schedule-Info 7.3 V-ITS-SG Item lists of the schedule by users.
A text type of information, warning,
4) Notice-Message — V-ITS-SG
and/or alarm to users.
5) User-Response 7.19 P-ITS-S A value of users’ choice.
Information on routes to destination
7) Route-Plan-Res 7.7 V-ITS-SG
provided to users.
6.2.1.1.3 Route plan
Table 3 shows the definition and message set for route plan, in order to provide the combining
transportation services from public and private transportation.
Table 3 — UC 1.2 Route plan
Use case Cluster 1. Route selection
Name UC 1. 2 Route plan (based on traffic information)
Brief description Mobility as a service (MaaS) describes a shift away from personally owned
modes of transportation and towards mobility solutions that are consumed
as a service. This is enabled by combining transportation services from
public and private transportation providers through a unified gateway
that creates and manages the trip, which users can pay for with a single
account. The key concept behind MaaS is to offer the travellers mobility
solutions based on their travel needs.
This information shall include:
—  MaaS or MoD requests
—  Eco-mobility service provision
Actor MaaS or MoD provider, nomadic device, cloud server
Goal Eco-mobility service by MaaS or MoD
Input Eco-mobility service request by nomadic devices
Output Eco-mobility utilization
Processing steps 1)  User (traveller) chooses a mode of transport (personal car or public
transport) and requests route guidance according to origin and destination.
2)  In case of personal car mode, the server provides a list of routes with
respect to optimal distance, minimal time, minimal cost, etc.
3)  In case of public transport mode, the server provides a list of routes
with available transit modes and cost of travel.
3.1)  To request an available list for reservation of public transit (bus,
rail, etc.) in the route.
3.2)  To send available seats for reservation of public transit (bus, rail,
etc.) in the route.
3.3)  To reserve seat in the selected public transit.
4)  Once the route and mode are selected, the server provides information
on eco-mileage points to be added or deducted according to the vehicle
type and carbon-free zone location included in the route from origin to
destination.
5)  Once the route and mode are selected, the server provides information
on traffic accidents, road construction, congestion, etc. included in the
route from origin to destination.
Message Step No. Name Subclause Exe Description
Request for route guidance ac-
1) Route-Plan-Req 7.4 P-ITS-S
cording to user’s way of travel.
Sending of the anticipated route
2) Route-Plan-Info 7.5 V-ITS-SG
list upon the request by user.
Request for public transit infor-
3.1) Route-Pub-Req 7.6 P-ITS-S
mation for the route.
Sending of the available seats
3.2) Route-Pub-Res 7.7 V-ITS-SG
list in the public transit modes.
Request for public transit reser-
3.3) User-Response 7.19 P-ITS-S
vation for the route.
A text type of information,
4) Notice-Message — V-ITS-SG
warning, and/or alarm to users.
A text type of information,
5) Notice-Message — V-ITS-SG
warning, and/or alarm to users.
6.2.1.1.4 Carbon-free zones information
Table 4 shows the definition and message set for carbon-free zones information, in order to provide
information on carbon-free zones.
Table 4 — UC 1.3 Carbon-free zones information
Use case Cluster 1. Route selection
Name UC 1. 3 Carbon-free zones information
Brief description Carbon-free zones can be designated in an established modern city in order to
reduce emissions of greenhouse gases to zero; all transportation system practices
that emit greenhouse gases shall cease.
This information shall include:
—  Carbon-free zones identification
—  Carbon-free zones information and management
Actor Urban transport authority, nomadic device, cloud server
Goal Eco-demand and access management through carbon-free zones
Input Carbon-free zones identification
Output Carbon-free zones information and management
Processing steps 1)  User’s nomadic device periodically sends driving information including po-
sition of the vehicle, speed, etc. to the server.
2)  Server sends roadway information on carbon-free zones to the nomadic
device if any appear in the route.
3)  In case of a carbon-free zone selected by user, server shows detailed infor-
mation about the carbon-free zone such as map and related eco-points into the
nomadic device.
4)  When user enters the carbon-free zone, server guides eco-point to be added
(for sustainable vehicle) or deducted (for fossil fuel vehicle) by the type of vehicle
per mile.
5)  When user exits the carbon-free zone, server calculates the eco-points by
the distance of travel to notify the nomadic device.
Message Step No. Name Subclause Exe Description
Information on real-time driving to
1) Eco-Driving-Info 7.10 P-ITS-S
be sent to server.
A text type of information, warning,
2) Notice-Message — V-ITS-SG
and/or alarm to users.
Request public transit reservation in
3) User-Response 7.19 P-ITS-S
the route.
4) Carbon-Free-Info 7.8 V-ITS-SG Information on carbon-free zone.
A text type of information, warning,
5) Notice-Message — V-ITS-SG
and/or alarm to users.
A text type of information, warning,
8) Notice-Message — V-ITS-SG
and/or alarm to users.
A text type of information, warning,
9) Notice-Message — V-ITS-SG
and/or alarm to users.
6.2.1.1.5 Mobile all transit
Table 5 shows the definition and message set for mobile all transit, in order to provide the eco-mobility
service by mobile all transit.
Table 5 — UC 1.4 Mobile all transit
Use case Cluster 1. Route selection
Name UC 1. 4 Mobile all transit (MaT)
Brief description Mobile all transit (MaT), a model similar to MaaS describes a shift away from
personally owned modes of transportation and towards mobility solutions that
are consumed as a service. This is enabled in Korea by combining transportation
services from public and private transportation providers through a unified gateway
that creates and manages the trip, which users can pay for with a single account.
This information shall include:
—  MaT requests
—  Eco-mobility service provision
Actor MaT provider, Nomadic device, Cloud server
Goal Eco-mobility service by MaT
Input Eco-mobility service request by nomadic devices
Output Eco-mobility utilization
Processing steps 1)  User registers transaction information about travel fare by transit card or
credit card.
2)  User sets eco-mileage for transaction of travel fare.
3)  User updates the user information in case of card changes due to replacing,
reordering, or lost.
4)  User requests transaction of travel fare related to public transit, toll charges,
parking fee, etc.
5)  Server sends the results of transaction of travel fare related to public transit,
toll charges, parking fee, etc.
6)  The user transit card is able to be utilized in the intermodal transfer with
discounted fare.
Message Step Name Subclause Exe Description
No.
1) Mobile-Card-Edit 7.9 P-ITS-S Data to be registered in user transit card.
3) Mobile-Card-Edit 7.9 P-ITS-S Data to be registered in user transit card.
A text type of information, warning,
5) Notice-Message — V-ITS-SG
and/or alarm to users.
6.2.2 Service applications 2: Passenger-car-based
Figure 3 shows passenger-car-based service flow and use case clusters 2, 3 and 4.
Figure 3 — Passenger-car-based service flow
6.2.2.1 UC Cluster 2: All-day driving
6.2.2.1.1 On-trip eco-driving support
Table 6 shows the definition and message set for on-trip eco-driving support, in order to provide eco-
driving identification and notification through eco-driving requests.
Table 6 — UC 2.1 On-trip eco-driving support
Use case Cluster 2. All-day driving
Name UC 2.1 On-trip eco-driving support
Brief description On-trip eco-driving support might provide drivers with better fuel efficiency
while driving by combining several one-mile trips, by reducing the number of
engine stops, following the speed limit, maintaining the vehicles, etc.
This information shall include:
—  Vehicle Identification Number (VIN)
—  Drivers’ requests for eco-driving modes
Table 6 (continued)
Actor Vehicle driver, Nomadic device, Cloud server
Goal Eco-driving identification and notification through eco-driving requests
Input Eco-driving request by nomadic device
Output Eco-driving display and notification
Processing steps 1)  User's nomadic device periodically sends driving information including po-
sition of the vehicle, speed, etc. to server.
2)  Server sends warning signal to vehicle while monitoring the speed which is
over the limit or inappropriate.
3)  Server sends information to user on congestion, delay, free flow, etc. on the
route to the destination.
4)  Server sends information to user on accidents or incidents, road work zones,
etc. on the route to the destination.
5)  Server sends weather information to mobile devices.
6)  Server sends information on alternative routes in case of impediments on
the route to the destination.
7)  Server calculates eco-points when user arrives at the destination based on
monitoring vehicle driving data from origin.
Message Step Name Subclause Exe Description
No.
Real-time dri
...