ISO/DIS 37167

Smart community infrastructures -- Smart transportation for energy saving operation by slowly driving intentionally

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DRAFT INTERNATIONAL STANDARD
ISO/DIS 37167
ISO/TC 268/SC 1 Secretariat: JISC
Voting begins on: Voting terminates on:
2020-04-15 2020-07-08
Smart community infrastructures — Smart transportation
for energy saving operation by slowly driving intentionally
ICS: 03.220.01; 13.020.20
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
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ISO/DIS 37167:2020(E)
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ISO/DIS 37167:2020(E)
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ii © ISO 2020 – All rights reserved
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ISO/DIS 37167:2020(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Principle of energy saving in transportation operation by modifying speed profiles

of running vehicles and applicable city issues ...................................................................................................................... 2

4.1 General ........................................................................................................................................................................................................... 2

4.2 Applicable city issues and United Nations SDGs ........................................................................................................ 2

5 Adoption and implementation of smart transportation for energy saving operation ................2

5.1 Objectives..................................................................................................................................................................................................... 2

5.2 Target transportation services .................................................................................................................................................. 3

5.3 Procedure to adopt smart transportation ....................................................................................................................... 3

5.3.1 Selection of transportation services where smart transportation is applied ............. 3

5.3.2 Scheduling of transportation dispatch.......................................................................................................... 3

5.3.3 Preparation of primary speed profiles of transportation dispatch ...................................... 3

5.3.4 Identification of buffer time between stations/stops/terminals........................................... 3

5.3.5 Allocation of buffer time to each division .................................................................................................. 4

5.3.6 Modification of primary speed profiles of transportation dispatch .................................... 5

5.3.7 Correction and finalization of service schedules ................................................................................. 5

5.3.8 Provision of an operation chart .......................................................................................................................... 5

5.4 Implementation of smart transportation ......................................................................................................................... 5

6 Maintenance of the quality of smart transportation for energy saving operation ..........................5

6.1 General ........................................................................................................................................................................................................... 5

6.2 Parameters to be observed ........................................................................................................................................................... 5

6.3 Modification of smart transportation.................................................................................................................................. 6

Annex A (informative) Typical speed profiles to schedule transportation dispatch .........................................7

Annex B (informative) Typical energy saving performance in railway operation by

modifying speed profiles ............................................................................................................................................................................. 8

Bibliography .............................................................................................................................................................................................................................10

© ISO 2020 – All rights reserved iii
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ISO/DIS 37167:2020(E)
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

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

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

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/ patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following

URL: www .iso .org/ iso/ foreword .html.

This document was prepared by Technical Committee ISO/TC 268, Sustainable cities and communities,

Subcommittee SC 1, Smart community infrastructures

In the development of this document, ISO Guide 82 has been taken into account in addressing

sustainability issues.
iv © ISO 2020 – All rights reserved
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ISO/DIS 37167:2020(E)
Introduction

Energy saving is one of top prioritized issues to be solved in every city in the world. This is already

[1] [2]

pointed out by ISO 37154: 2017 and ISO 37161: 2020. Particularly in ISO 37161, how, where and in

what situations energy consumed in transportation services can be saved are mentioned.

Rail services are common but indispensable transportation means to convey people, delivery items and

freight within cities, between cities and in a large city zone. Rail services consist of a lot of service

and technical aspects and functions supporting the transportation performance. Thus, to save energy

in rail services, there are many options applicable thereto. Energy saving by modifying speed profiles

of running trains or trying to run slowly as far as service schedules permit is a typical way that has

been practically used and is even now being improved in train operation, since all trains are operated

by scheduling. Energy saving by this method is focused on rail services. The theory is, however, still

applicable to other transportation services or modes that are operated based on scheduling. Therefore,

energy saving by modifying speed profiles can be widely applied to other transportation services

adopted in cities and offers great scale saving of energy consumed in transportation services.

The principle to save energy by modifying speed profiles is very simple. All trains, buses/trucks and

ferries are able to run on a service line or sailing route at a maximum speed technically allowed. By

reducing the running speed, energy consumption can be depressed. Commonly, trains, buses/trucks

and ferries are scheduled by including standing-by time to provide passengers and freight senders/

recipients with convenient service schedules, for example, to offer good connections and to avoid

odd time for shipping/picking-up. Besides such service reasons, technical situations will force trains,

buses/trucks and ferries not to run at a maximum speed. A typical case will be that they have to pass

another service at a station with more tracks/lanes on a single track line/traffic road or at a wider

point on a narrow sailing route. They should come to the station/point not absolutely at but by the time

designated. This operation brings leeway or buffer time to be used on the way to the place. To kill the

time until arriving thereat at the designated time, they can run slowly. This leads to the reduction in the

amount of energy to be consumed when running at a maximum speed.

Slow running avoids high acceleration/deceleration, compared to when running at a higher speed.

Passenger-friendly driving will additionally be realized when arranging energy saving operation in

transportation services. From environmental viewpoints, such slow running would contribute to

reduction in emission from vehicles, which are carbon monoxide, hydrocarbons, nitrogen oxides, sulfur

oxides, lead and aromatic compounds and so on.

This document describes how to save energy in scheduled transportation services by modifying speed

profiles.
© ISO 2020 – All rights reserved v
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DRAFT INTERNATIONAL STANDARD ISO/DIS 37167:2020(E)
Smart community infrastructures — Smart transportation
for energy saving operation by slowly driving intentionally
1 Scope

This document describes to organize smart transportation to save energy consumed in operation,

by modifying speed profiles of trains, buses/trucks and ferries, which is also able to offer passenger-

friendly driving of transportation vehicles.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at http:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
transportation dispatch
services operated by using vehicles along with service schedules

Note 1 to entry: The vehicles used are normally trains, buses, trucks, ferries and others as listed in ISO 37154, 2.5.4.

3.2
service schedule
timetable to be followed when driving for transportation dispatch
3.3
section

tracks, lanes or sailing routes active for operation of transportation dispatch between stations, stops or

terminals
3.4
line
sections combined
3.5
route

lines or part thereof that are combined for through transportation services between lines

3.6
division

specific parts created and identified on a line or route by dividing a section thereon to gradually change

running speed in a section
3.7
buffer time

leeway time given to transportation dispatch, with which energy saving can be achieved

© ISO 2020 – All rights reserved 1
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ISO/DIS 37167:2020(E)
3.8
speed profile
figures illustrating speed changes of transportation dispatch in divisions

Note 1 to entry: In smart transportation for energy saving operation, speed profiles are useful to find the most

effective driving way by identifying divisions where to slowly run as far as service schedules permit. A typical

speed profile is illustrated in Annex A for reference.
4 Principle of energy saving in transportation operation by modifying speed
profiles of running vehicles and applicable city issues
4.1 General

The principle of energy saving in transportation operation by smart transportation designated in this

document is simple, which is performed by modifying speed
...