ISO 37167:2021

INTERNATIONAL ISO
STANDARD 37167
First edition
2021-07
Smart community infrastructures —
Smart transportation for energy
saving operation by intentionally
driving slowly
Infrastructures urbaines intelligentes — Transport intelligent
pour une exploitation économe en énergie par une conduite lente
intentionnelle
Reference number
©
ISO 2021
© ISO 2021
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ii © ISO 2021 – All rights reserved

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 General. 3
5.3.2 Selection of transportation services where smart transportation is applied . 3
5.3.3 Scheduling of transportation dispatch. 3
5.3.4 Preparation of primary speed profiles of transportation dispatch . 3
5.3.5 Identification of buffer time between stations, stops, terminals or way points . 4
5.3.6 Allocation of buffer time to each division . 4
5.3.7 Modification of primary speed profiles of transportation dispatch . 5
5.3.8 Correction and finalization of service schedules . 5
5.3.9 Provision of an operation chart . 5
5.4 Implementation of smart transportation . 5
6 Quality maintenance of smart transportation for energy saving operation .5
6.1 General . 5
6.2 Parameters to be observed . 6
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
Foreword
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This document was prepared by Technical Committee ISO/TC 268, Sustainable cities and communities,
Subcommittee SC 1, Smart community infrastructures.
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iv © ISO 2021 – All rights reserved

Introduction
Energy savings is a priority issue for all cities. ISO 37154, and especially ISO 37161, has addressed how,
where and in what situations energy consumed in transportation services can be saved.
Rail services are indispensable as one of the most efficient means to convey people, delivery items and
freight within cities, between cities and in a large city zone. Rail services are comprised of many service
and technical aspects. To save energy in rail services, there are many options to review for improving
energy efficiency. Energy savings by slowing the speed of the train and still achieving minimum service
schedules is a method that is frequently employed. This method of operation is applicable to other
transportation services or modes that are based on scheduling. Energy saving by modifying speed
profiles offers great energy savings when widely applied to all transportation services.
The principle of this method is rather simple. All trains, buses, trucks and ferries typically run on a
service line or sailing route at the maximum speed technically allowed. Reducing the running speed
will reduce the energy consumption. Commonly, all transportation modes, passengers and freight,
are scheduled to include standing-by time to provide passengers and freight shippers with convenient
service schedules, providing good connections and avoiding odd time for pickup and delivery. Service
schedules can be designated so that when passing another service at a station with more tracks or lanes
on a single-track line or traffic road, or at a wider point on a narrow sailing route, a train, bus, truck or
ferry should come to the station or point by the time designated. If the designated arriving time is set
later than the expected arrival time at a maximum speed, the train or other transportation mode can
run slower. Overall, this will lead to a reduction in the amount of energy to be consumed.
Slow running avoids high acceleration and deceleration, compared to when running at a higher speed.
Passenger-friendly driving will additionally be realized when operating in this energy saving method.
From an environmental standpoint, slow running will contribute to a reduction in carbon monoxide
emission, hydrocarbons, nitrogen oxides, sulphur oxides, lead and aromatic compounds, if services by
engine-driven vehicles.
This document describes how to save energy in scheduled transportation services by modifying speed
profiles.
In the development of this document, ISO Guide 82 has been taken into account in addressing
sustainability issues.
INTERNATIONAL STANDARD ISO 37167:2021(E)
Smart community infrastructures — Smart transportation
for energy saving operation by intentionally driving slowly
1 Scope
This document describes how 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 https:// 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 (3.2)
Note 1 to entry: The vehicles used are normally trains, buses, trucks, ferries and others as listed in ISO 37154,
5.2.4.
3.2
service schedule
timetable to be followed when driving for transportation dispatch (3.1)
3.3
section
tracks, lanes or sailing routes active for operation of transportation dispatch (3.1) between stations,
stops or terminals
Note 1 to entry: In sailing routes, way points can be placed between ferry terminals to ensure on-time operation
if a long distance between terminals. In this case, the route between way points is a section.
3.4
line
sections (3.3) combined
3.5
route
lines (3.4) 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 (3.3) 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
3.8
speed profile
figures illustrating speed changes of transportation dispatch (3.1) 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
In smart transportation as designated in this document, energy consumption can be reduced by
modifying the operating speed of transportation service vehicles. That is, by operating the vehicles as
slow as the service schedule permits. All transportation dispatch is managed by operating trains, buses,
trucks and ferries by adhering to service schedules that include leeway or buffer time generated for
customer-friendly transportation services and due to operational reasons. This means that it will take a
longer time going from origin to destination, even if vehicles can arrive earlier by running at maximu
...