TOKYO Resilience Project
Aiming for “Safety for the
Next 100 Years”

December 2022

For a Tokyo Where Everyone Can Feel Safe for the Next 100 Years■Natural disasters have struck Tokyo many times in the past. Massive floods and storms,
earthquakes, volcanic eruptions, or new pandemics could strike at any time, and also occur
in combination.
■On top of this, the situation is becoming increasingly severe. The IPCC Report released in
April of this year underlined once again the imminent threat of rising temperatures triggering
more frequent and severe floods and storms, and other such disasters.
In addition, although the revised estimate released in May by the Tokyo Metropolitan
Government for damage resulting from a major earthquake directly striking the city showeda reduction in damage from the previous estimate, attention was drawn to challenges
associated with societal changes. Disasters carry the risk of power outages andcommunication breakdowns, and are likely to have an enormous impact on the lives of thepeople of Tokyo.
■Anticipating a variety of risks and being fully prepared for the worst-case scenario are at the essence of crisis
management. To fulfill our mandate to protect the lives and livelihoods of Tokyo residents, the TMG, in
collaboration with various entities including the national government, municipalities and communities, must work
hand in hand with the police and fire departments, medical institutions, people involved in the operation ofevacuation centers, and many others. At the same time, we must do whatever it takes to prevent catastrophic
damage from occurring. As in our motto “ Always Be Prepared,” ceaseless efforts to be prepared are crucial.
It is with such determination that we formulated the “Tokyo Resiliency Project: Aiming for safety for the next 100
years,” which sets out the roadmap to achieving our vision for Tokyo in the 2040s.
■ Next year, 2023, marks the centennial of the Great Kanto Earthquake. We will strongly promote this project,which will begin in this milestone year, to ensure that Tokyo, the capital of Japan, becomes a sustainable city thatoffers its residents peace of mind for the next 100 years to come.

■ Let us further strengthen our efforts from the three perspectives of self-support, mutual support, and public
support, and together work to achieve a resilient Tokyo.

December 2022
1

Koike Yuriko
Governor of Tokyo

Overview

TOKYO Resilience Project

Aiming for “Safety for the Next 100 Years”

December 2022
Tokyo Metropolitan Government

Contents
Chapter 4: Projects to Address Each Crisis

Chapter 1: Concept of the Tokyo Resiliency Project

１ Project structure

１ Background of the project’s formulation

２ Projects to address each crisis(1) Protecting residents from increasingly severe floods and storms(2) Building a city that “does not collapse, does not burn, and survives”
even in the event of a major earthquake(3) Maintaining urban activities even if there is a volcanic eruption(4) Eliminating concerns about power, communications, and datawhen a disaster strikes(5) Building a city that is resistant to infectious disease

２ Positioning of the project３ Basic policy for project formulation

Chapter 2:Five Imminent Risks and Compound
Disasters Facing Tokyo
１ Five risks(1) Floods and storms that are becoming increasingly frequent andsevere due to climate change(2) Earthquakes that can happen any time and cause extensive
damage(3) Volcanic eruptions that will directly lead to complete evacuation of
an island or paralyze urban functions(4) Disruption of power, communications, etc. that will hinder
residents’ lives and social activity(5) Infectious diseases that make close contact a risk and threatensocioeconomic activities

３ Surviving a Tokyo metro area-wide complex disaster

Chapter 5: Project Promotion
１ Concept for project promotion

２ Effective project promotion measures

２ Risk of a compound disaster that will lead to more extensive
and prolonged damage

３ Disseminating information to Tokyo residents, etc.

Chapter 3: Vision for a More Resilient Tokyo in the
2040s

Chapter 6: Project Scale
１ Rough estimate of the project’s scale

１ Basic concept(1) Total project scale (rough estimate)(2) Breakdown of project scale (rough estimates)

２ Resilience to each type of crisis(1) Protecting residents from increasingly severe floods and storms(2) Building a city that “does not collapse, does not burn, and people
survive” even in the event of a major earthquake(3) Maintaining urban activities even if there is a volcanic eruption(4) Eliminating concerns about power, communications, and datawhen a disaster strikes(5) Creating a city that is also highly prepared for infectious diseases

2Chapter 1: Concept of the Tokyo Resiliency
Project
概要版（案）
１ Background of the project’s formulation○ Faced by the threat of natural disasters, all measures must be upgraded in order to protect the lives and livelihoods of Tokyo’s residents and tomaintain the functions and economic activities of the capital, which support all of Japan.
○ Making the city more resilient will be very expensive and take a very long period of time. To ensure that measures looking to the future will be carried out
in a stable and continuous manner over the medium to long term, the projects carried out by the TMG have been compiled in this Tokyo Resiliency
Project.

２ Positioning of the project(1) TMG’s basic concept○ The safe and secure city of Tokyo, which could be called the crystallization of efforts of our predecessors, will be taken to higher levels andpassed on to future generations.

(2) Purpose of the project○ The projects to be undertaken by the TMG are organized under five risks (floods and storms, earthquakes, volcanic eruptions, disruption of power,
communications, etc., and infectious diseases), with the addition of compound disasters.
○ The responsible bureaus will collaborate with each other and implement their respective projects by reflecting the resiliency project’s contents in theirindividual measures and project plans.

(3) Scope of the project○ Among projects positioned as part of the “Future Tokyo: Tokyo’s Long-Term Strategy,” those that meet the following three criteria fall under this project.
① Projects addressing the five risks (measures responding to the five risks of floods and storms, earthquakes, volcanic eruptions, disruption of power,
communications, etc., and for becoming a city resilient to infectious diseases)② Projects expected to be effective in overcoming risks in the promotion of this project* （of projects to renew existing facilities, includes initiatives
with the main purpose of ensuring the maintenance of functions in the event of a disaster)③ Projects for which the TMG is taking the initiative in participation and implementation（including subsidies and policy guidance)*There are other projects apart from those positioned in this project that contribute to improving disaster preparedness.

３ Basic policy for project formulation(1) From a backcasting approach, upgrade measures based on assumptions shared throughout the TMG○ Utilizing a backcasting approach, this project will begin by envisioning a more resilient Tokyo in the 2040s, and then work backwards to establish theroadmap from the present to that future vision. Along with determining projects for each risk and compiling the various measures and projects, pioneeringand distinctive efforts will be listed as leading projects.
○ Assumptions on the situation that are shared throughout the TMG are established as “common perspectives,” and along with sharing crisis
awareness throughout the TMG, measures will be upgraded through the collaboration of the relevant bureaus.

(2) Develop highly effective measures that center on hard infrastructure and its combination with soft
infrastructure○ While focusing mainly on hard infrastructure measures, such as infrastructure development, from the standpoint of maximizing the effectiveness ofhard infrastructural preparations, also combine soft infrastructure measures such as utilizing digital technologies.

(3) Promote measures based on the standpoint of collaboration with diverse entities○ Strengthen measures while taking into consideration the importance of collaboration with various entities such as the national government,
municipalities, businesses, Tokyo residents, and communities, who work together with the TMG to realize a more resilient Tokyo.

3Chapter 2: Five Imminent Risks and Compound Disasters Facing Tokyo
１ (1) Floods and storms that arebecoming increasingly frequent andsevere due to climate change

１ (2) Earthquakes that can happen
any time and cause extensive damage

１ (3) Volcanic eruptions that will
directly lead to complete evacuation of
an island or paralyze urban functions

Situation in Tokyo

Situation in Tokyo

Situation in Tokyo■ Tokyo is often subject to flood damage suchas river flooding and inland flooding
occurring from large volumes of stormwaterflowing into rivers and sewer systems.

■ A magnitude 7 class earthquake has a 70%
probability of striking the southern Kanto area
within the next 30 years.

■ There have been 7 volcanic eruptions on
the Tokyo islands in the last 100 years.
After the Miyakejima volcano eruption in
2000, it took about four and a half years forthe island evacuation order to be lifted.

■Sediment disasters in the Tama mountains
and the Tokyo islands can have a serious
impact on residents’ lives by cutting off roadaccess and isolating entire villages.
■ Flood and storm damage could become
more severe as temperatures are expected
to rise and the amount of rainfall toincrease in the future.

■ While damage estimates by the TMG, whichwere revised in May 2022, presented an
improvement from previous estimates, it wasagain shown that a major earthquake, such as
one directly striking Tokyo, would cause
extensive damage.
Evacuation may be prolonged with therestoration of lifelines estimated to take 4 days
for power and about 6 weeks for low-pressure
gas* in a maximum damage scenario.

*Depending on the damage situation, it may take moretime before service is available for use in homes, etc.

■ Mt. Fuji last erupted about 300 years ago.
Low-frequency volcanic earthquakes occurring
frequently around the year 2000 have again
struck home that Mt. Fuji is an active volcano.
■ In a worst case scenario, a massive eruptionof Mt. Fuji would result in ash fall reaching theTama area and even the 23 wards, causing
power outages, road traffic disruptions,suspension of rail services, and other damage
to the city’s infrastructure.

Future direction

Future direction

Future direction➡ Continue to implement measures for floods andstorms based on currently estimated levels.

➡ While showing some improvement, damage➡ In the islands, promote the upgrading of measures
based on lessons learned to date.

estimates are still high, making it necessary to
upgrade measures.

➡ Measures also need to be upgraded to address
further intensification of floods and storms due toclimate change.

➡ Appropriate response to challenges arising fromchanges such as the city’s demographics andhousing environment is also needed.

➡ To address potential ash fall from Mt. Fuji,
developing systems such as to clear roads andfor the disposal of ash in residential areas will benecessary.

Common perspectives

Common perspectives

Common perspectives■ Climate change scenario for development of
infrastructure for the 2040s: Based on a２℃
increase in average temperature, theamount of rainfall will increase by 1.1 times,
and the sea level will rise as high as by
about 60cm.
■ Very strong tropical cyclones with maximum
wind speeds of at least 59m/s will form more
frequently in the future.

■ Estimated damage from a major earthquake
directly striking the southern part of central Tokyo:
・ Deaths: about 6,000; Buildings damaged: about
194,000
・ Possibility of traffic disruption on designateddisaster response routes (in areas with a seismic
intensity of upper 6 or higher)
・ People needing to evacuate their homes due toelevators stopping, etc.
・ Use of air conditioning, toilets, etc. disrupted due tosuspension of lifeline utilities■ Estimated damage from a Nankai Troughmegathrust earthquake・ Suspended delivery of daily commodities to the4islands■ In the event of an eruption in the islands:
・ Residents will have to evacuate due to tephra,ash fall, lava flow etc.
■ In the event of a large eruption of Mt. Fuji (worst
case scenario):・ Ash fall will affect transportation in 3 hours
・ Ash fall will be 2-10 cm deep in most parts ofTokyo’s 23-ward area
・ Power outages, traffic disruption, suspended
rail services
・ Ash fall equivalent to nearly 10 times the debris
from the Great East Japan Earthquake (about 490
million ㎥)

１ (4) Disruption of power,
communications, etc. that will hinder
residents’ lives and social activity

１ (5) Infectious diseases that makeclose contact a risk and threatensocioeconomic activities

２ Risk of a compound disaster thatwill lead to more extensive andprolonged damage

Situation in Tokyo

Situation in Tokyo

Situation in Tokyo■ The March 2022 earthquake off the coast of Fukushima■ Due to factors such as more global■ Amid the increasing risk of each of these

movement of people and things, newinfectious diseases originating in various
parts of the world spread beyond national
borders.
■ Tokyo is a cosmopolitan city with active
inflow and outflow of people and things acrossborders. There will continue to be a risk of an
infectious disease being brought in fromoverseas, leading to a new epidemic.
■ The COVID-19 pandemic triggeredchanges in people’s awareness andbehavior, such as maintaining social distance,
avoiding closed-in spaces, expanding the useof remote work, and utilizing various modes oftransportation.

■ Compared to damage caused by a single
disaster, it is feared that damage will be
amplified by a compound disaster .

* caused around 2.1 million households in TEPCO’s
service area to lose power. It took about 3 hours to
restore power, and even in the city, elevators andtraffic lights stopped working.

■ With the widespread use of ICT devices,
telecommunication services have become an
indispensable infrastructure for the everyday lives
and social activities of Tokyo’s residents.

■ Communication services were disrupted at thetime of the 2011 Great East Japan Earthquake. And acommunications provider’s equipment failure that
occurred in July of that year not only disrupted voice
and data communications, but had significant impacts
on urban activities including ATMs and freighttransport.

Future direction➡ Although urban development to secure energy
supply and strengthen communications in
preparation for a disaster is making progress, itwould be necessary to strengthen initiatives forsecuring the stability of the information andcommunications infrastructure, and for its early
restoration.

Common perspectives■ Power outage in the city caused by a major
earthquake directly striking Tokyo・ Percentage of power outages: 11.9% (4 days forfull restoration*)* Depending on the damage, it may take more time
for service to become available in homes, etc.

■ Percentage of households possessing
smartphones: about 89%■ During the Great East Japan Earthquake, voice
calls were restricted by as much as 70-95% due tocongestion of mobile communications networks.

Future direction➡ As people’s awareness and behavior change
due to the pandemic, a city that is resilient
to infectious disease as well must be built toprepare for outbreaks of new infectious
diseases.

Common perspectives■ Due to the COVID-19 pandemic,
・ Awareness of avoiding crowds and closed-in
spaces has made inroads.
・ When it is recommended to wear a mask:
Indoors: When it is not possible to physicallydistance (by about 2 meters)
Outdoors: When conversing with others without
physically distancing
・ High need for outdoor spaces (ways for theirgreater use are needed)
・ Over 50% of people surveyed want off-peak
commuting and remote work to become
established practice.

■ Build digital infrastructure for business continuity
even in the event of a disaster.

5

disasters, there is also a growing risk ofcompound or cascading disasters, such as a
new disaster striking before recovery froma disaster, or a natural disaster occurring
during an infectious disease outbreak.

■ The heavy rains of July and August 2021
during the COVID-19 pandemic, caused
extensive damage across a wide area of Japan,
and also revealed the need to consider how
to evacuate COVID patients recuperating at
home and to set up infection prevention
measures at evacuation centers.

Possible compound disasters○ A large typhoon striking Tokyo during its
recovery from a major earthquake directly
hitting the city
・ The typhoon could cause storm surges andother damage in areas where coastal
protection facilities, river facilities, and others
were damaged by the tremors andliquefaction.
○ An earthquake or flood occurring during
the several years of a pandemic
・ Outbreaks of mass infection amongevacueesChapter 3: Vision for a More Resilient Tokyo in the 2040s
１ Basic concept

Vision fora moreresilientTokyo inthe 2040s■ A city that can protect the lives of its residents to the maximum extent possible, keep damage within
the city to a minimum, and restore urban functions quickly achieved through the implementation of hard
infrastructure measures, as well as soft infrastructure measures based on shifts in the social landscape, toaddress threats such as climate change and earthquakes.

■ A safe, secure, and sustainable city known for its thorough preparations for a broad range of crises that
attracts different forms of investment, as well as people from Japan and overseas.

Preparations forfloods and storms

Preparations forvolcanic eruptions

Preparations for earthquakes

Preparations for power andcommunications outages, etc.

6Creating a city that is also highly
prepared for infectious diseases２ (1) Protecting residents from increasingly severe floods and storms■ Residents can live their lives without feeling worried about flood and storm damage, even in low-lying
areas and areas alongside rivers or by the sea.

Vision for
激甚化する風水害との闘いに、打ち克つ・ Through reinforcement of river facilities and sewer system facilities, raising the height of sea walls, measures to ensure the accurate andprompt opening and closing of floodgates, strengthening of measures for underground shopping centers and subways, and improveda moredisaster resistance of slopes and quays, as well as the conservation and utilization of natural features for flood control in line with thegreen infrastructure concept, flood damage and sediment disasters no longer occur.
resilientTokyo in■ Even if a disaster strikes, evacuation sites and routes have been secured.
・ Safe evacuation is facilitated through pre-determined steps for phased evacuation and accelerated damage assessment andthe 2040s
dissemination of information.
・ A well-developed road network prevents disruptions in the transport of relief and keep residents from becoming isolated.

Goals (Policy Objectives)
Ensure the ability to handle a 10% increase in rainfall due to climatechangeFloodcontrolmeasures

Storm
surge
measures・If the target rainfall stipulated under the current plan (probability of rainfall of 75mm/hour ormore in the special-wards area occurring multiple times over a 20-year period) is maintained,that would mean an increase by a factor of 1.1 to approx. 85mm/hour.
*Target rainfall levels will be reviewed in the process of revising the TMG Basic Policy for
Measures Against Heavy Rainfall.

Ensure the ability to deal with rising sea levels due to climate change(up to 60cm by the year 2100) (Port of Tokyo)

・ To counter the rise in sea levels over time, designate priority to sea walls measuring
approx. 60km in length and implement construction in phases (the planned maximum
sea wall height in 2100 will be up to 1.4 meters higher than the current plan*).
*Subject to revision as necessary based on future findings and monitoring results.

Evacuation
to higher
groundEstablish emergency evacuation sites that can be accessed even by
those who are late to evacuate

・ Promote the development of high-spec levees on the Arakawa, Edogawa, andTamagawa rivers in cooperation with the national government.

Subways,etc.

Ensure that subway users can evacuate safely even when rainfall
exceeds the target amount

Sediment
disasters

Prevent loss of human life and isolation due to sediment disasters

Measuresfor strong
winds

Prevent power outages and accidents caused by objects such as
signboards that turn into projectiles due to strong winds

7

Image of Key Initiatives■Promotion of the development of regulating reservoirs, etc.

 Development of facilities that can adapt to climatechange has advanced based on the results of studies of
new construction and improvement methods, including
those related to underground river facilities.

■Raising the height of sea walls

 Sea walls have been constructed to address the futurerise of sea levels and stronger typhoons.

■Acceleration of urban development that creates higher

ground Under a new framework, higher ground has beencreated to serve as a base for emergency rescue andother activities.
■Promotion of measures to prevent the flooding of subways
and underground shopping centers (prevention of flood
damage spreading)

Underground spaces have been equipped with waterstop plates, flood prevention systems, and otherdevices to prevent water from entering through station
entrances, ventilation openings, and tunnels.

■Elimination of concerns related to sediment disastersProgress has been made with respect to measures toprotect human life and securing alternative routes.

■Prevention of damage caused by strong winds
Progress has been made in eliminating factors leading
to the collapse or damage of structures, etc.

Future image (Protecting residents fromincreasingly severe floods and storms)

Grasp risks in advance by using digitaltechnology (identify high-risk mountainstreams, detect improper embankment)

Ensure safety early on byusing simple landslidecountermeasures (netting tocapture debris flow)

Secure alternative routes for
mountainous areas in preparation
for landslides, etc.

Measures for increased rainfall(install rainwater storage andinfiltration facilities, etc.)

Measures forincreased rainfall(reinforce sewers)
Prevent damage from strong
winds (remove utility poles,
diagnosis of Street trees)

Measures for increasingly heavy
torrential rain (develop river
channels so floodwater can safely
flow through them)

Measures for increasingly heavy
torrential rain (collect some of thefloodwaters in regulating reservoirs,etc.)
Accelerate urban
development to eliminate
concerns in low-lying areas(urban development thatcreates higher ground)

Ensure safety against
flooding (high-standard
revetments)

Measures for increased
rainfall (strengthen thecapabilities of drainage pumpstations)

Prevent flooding in undergroundareas (flooding countermeasures for
subways and underground shopping
centers)

8

Measures forrising sea levels(raise sea walls)

Secure functions in
preparation for acomplex disaster(make sewer systemfacilities more waterresistant)

２ (2) Building a city that “does not collapse, does not burn, andpeople survive” even in the event of a major earthquake

Vision fora moreresilientTokyo inthe 2040s■ Earthquake-resistant buildings and communities that do not burn or spread fire protect the lives andlivelihoods of Tokyo residents.

・ Along with improving the fire resistance of areas with close-set wooden houses, improving local disaster prevention capabilities will
prevent the outbreak and spread of large-scale fires.

・ Progress in making buildings earthquake-resistant and eliminating utility poles prevents them from collapsing or falling over when an
earthquake occurs.

■ The transportation network that supports emergency response activities following an earthquake has been
secured, enabling rescue and relief agencies to quickly reach their destinations.

・ Extensive earthquake-proofing has been carried out along roads and an emergency transport network can be set up promptly byleveraging digital technology to assess damage at the time of a disaster.

Goals (Policy Objectives)
Eliminate the causes of road blockages for designated disaster response routes(also prepare backup alternate routes for use in the event a blockage does occur)
Emergency
routes・Overall completion rate* of movement of vehicles between designated points ondesignated disaster response routes to 100%(*Measures the projected passibility of designated disaster response routes following a disaster)Disastermanageme
nt facilities

Areas withclose-setwoodenhousesEarthquake-resistant
homes

Image of Key Initiatives■Designated disaster response routes that link key disastermanagement facilities, etc.
 Earthquake-proofing of buildings along roads is complete.

■Access routes to wide-area disaster management bases

Realize improved disaster response capabilities

・Secure multiple routes for the transport of emergency relief, as well as
regional medical transport, in the Tachikawa area and Tokyo’s waterfront area.

 In areas surrounding disaster management bases, cityplanned roads have been developed and grade separation
with railway lines has been achieved, etc.

■Improved fire resistance in areas with close-set wooden

Realize communities that do not burn or spread fire・Achieve a fire-resistant ratio of 70% or higher in development districts(Fireproof Zones), etc.

Reduce the number of deaths due to building collapse, etc., caused byan earthquake that directly strikes Tokyo, etc., by around 80%*・ Ensure that 100% of homes meet standards for earthquake resistance(year 2000 building codes)*Based on estimates for damage mitigation effects outlined in the May 2022 TMG damage
estimates for a major earthquake that directly strikes Tokyo, etc.

houses Fireproofing initiatives focused mainly on development
districts, including the removal and reconstruction of old
buildings, have been completed.

■Seismic performance of homes and buildingsAll houses and buildings meet year 2000 building codes,
eliminating concerns over building collapse.

■Staying at home is an option following a major
earthquake

Evacuation
measures

Tokyo
Islands

Eliminate crowding in evacuation centers (evacuation centers in Tokyo

can currently accommodate approximately 3.2 million people)

Prevent the Tokyo islands from becoming cut off when adisaster strikes
・ Ensure that each island has a quay designated for emergency transport

9

Equipment to facilitate staying at home rather than goingto an evacuation center is secured for both detachedhomes and apartment buildings, and food and daily
necessities are stockpiled by residents, etc.

■Transportation bases for relief supplies, etc., to be used
when an earthquake strikes


Quays necessary for emergency transportation have been
completed in the Tokyo islands.

Future image (Building a city that “does not collapse, does not burn,and people survive” even in the event of a major earthquake)
Reduce the risk of fire spreading and blocked
roads (develop designated maintenanceroutes in conjunction with earthquakeproofing of buildings along roads)

Make housing earthquake-resistant(expand support for wooden houses andapartment buildings)

Reinforce access to disaster prevention
facilities, etc. (expand functions andpromote development of disasterprevention docks)

Promote improved fire
resistance in urban
areas (expand support)

Reduce the risk ofblocked roads (byeliminating utility
poles)

Improve the home evacuation
environment (popularization of LCP*
homes that are resilient in the event of
a disaster, promotion of ensuring selfreliant power sources)(LCP= Housing complexes that aredesigned to make it easier to continue
living at home.)

Reinforce access to disasterprevention facilities, etc. (develop
roads to serve as access routes)

Improve residents’ response
capabilities in normal times (restore
earthquake recovery parks*,
enhance and strengthen disasterprevention for apartment buildings)(*Parks built at the time of theGreat Kanto Earthquake)

Promptly assess damage(using drones in theevent of a disaster)

Secure sites for the transport of supplies,
etc. in the event of a disaster (develop
quays for emergency transportation)

Expand the emergency
transportation network (improvethe earthquake resistance ofbuildings along roads)

10

Expand the emergency
transportation network (makebridges and tunnels earthquakeresistant, prolong service life)

２ (3) Maintaining urban activities even if there is a volcanic eruption
Vision fora moreresilientTokyo inthe 2040s■ The lives and property of residents of Tokyo’s islands are protected from debris flows, etc., and island
residents can evacuate safely.

・ Evacuation sites that have been reinforced to protect against volcanic ash and advanced preparation for evacuation facilitate proper
evacuation actions.

■ Even in the event of ash fall generated by an eruption of Mt. Fuji, transportation and lifelines will not be cut
off for a prolonged period of time.
・ Damage to lifelines caused by ash fall is minimized by removing utility poles, covering water purification facilities or converting them intoindoor facilities, and sharing ash fall forecasts.
・ Prolonged interruption of urban functions is prevented by removing ash in stages based on information that is promptly obtained andanalyzed.

Goals (Policy Objectives)
Image of Key Initiatives■Ensure that power and water continue to be supplied
Lifelines

Transportation
network

Ensure that power, water, and natural gas continue tobe supplied
Quickly restore the functionality of roads leading to criticalfacilities
・Ensure a 24-hour system for removing volcanic ash through publicprivate collaboration.

Disposal ofaccumulatedash

In cooperation with the national government, other prefectures,etc., secure temporary storage sites for the total anticipatedvolume of ash fall from an eruption of Mt. Fuji (approximately
490 million ㎥).

 Necessary preparations have been advanced. This includes
covering water purification facilities or converting them intoindoor facilities and removing utility poles.
 *The supply of natural gas will not be impacted by ashfall.

■Quickly restore the functionality of roads A system for clearing roads is in place, and materials andequipment, such as road sweepers for removing ash, havebeen secured.

■Removal of volcanic ash

The division of roles between relevant organizations andthe procedures for temporary storage, collection, andtransportation methods have been specified.

Islandareas

Islandareas

Ensure the secure evacuation of all island residents

11■Facilities required for evacuating people off the islands byship Waiting areas to board ships have been designed to
specifications that take volcanic ash into consideration.

Future image (Maintaining urban activities even
if there is a volcanic eruption)

Strengthen cooperation for early
restoration of the transportation network(establish a system for restoring railways)

Establish a systemfor eliminating roadobstacles (secureroad sweepers, etc.)

Ensure the functioning oflifelines (adding roofing towater purification facilities
or making them indoors)

Enhance and utilize
cooperation on ash fall
forecasting (use nationalash fall forecasts)

Prepare in advance toensure a smooth evacuation(install volcanic eruption
surveillance cameras)

Remove volcanic ash inorder to resume urban
activities as soon as
possible (secure
temporary storage sites)

Develop evacuation
facilities (waiting
areas for boarding
boats and parking
lots)

Ensure the functioningof lifelines (remove
utility poles)12２ (4) Eliminating concerns about power, communications, and data when adisaster strikes
Vision fora moreresilientTokyo inthe 2040s■ Electricity can be “generated and stored,” so there is no need to worry that the city will go dark when adisaster strikes.

・ In addition to emergency power generation equipment, through promotion of the installation of self-sufficient and decentralized powersources, such as solar panels and storage batteries, and urban development that facilitates distribution of energy throughout an area,
including installation of conduits, it is possible to generate and use energy when a disaster strikes.

■ Multiplexing forms of telecommunications will facilitate uninterrupted access to services, even during adisaster, connecting anyone, anywhere, at any time.

・ When a disaster strikes, it is possible to use telecommunications services in all areas of Tokyo, including at evacuation centers and in
the mountainous areas of Tama and on the Tokyo islands.

・ Data and IT systems have been strengthened to ensure business continuity in the event of a disaster.

Goals (Policy Objectives)

Image of Key Initiatives

Reinforce the ability of the public facilities that protect the
lives of Tokyo residents to secure power
Power

Promote the adoption of self-sufficient and decentralized
power sources, and develop communities where residents
can safely evacuate or stay at home following a disaster.
⇒ Solar power generation equipment installed:
Capable of generating 2 million kW or more (by 2030)

Communicationsof residents
 Adoption of self-sufficient and decentralized power sources such as solar
power generation and storage batteries.
 Project to realize a hydrogen society■Urban development that eliminates concerns about power supply Promotion of the adoption of solar power systems and storage batteries
 Utilization of various urban development programs, etc., to encourage
the introduction of renewable energy facilities, including solar power
generation equipment, in addition to emergency power generation
facilities

Realize a “Connected Tokyo” where anyone can beconnected anytime, anywhere⇒ Completely eliminate areas where people live and work in Tokyo
with poor connectivity

Data■Power supply measures for infrastructure facilities that protect the lives

Make digital infrastructure more resilient to ensure
continuity of operations even in the event of a disaster,and implement disaster prevention measures using
data.

■Secure communications networks
 Implementation of upgrades to the Wi-Fi environment at metropolitan
government-owned facilities
 Introduction of state-of-the-art satellite communications to eliminate
areas with poor connectivity■Data preservation and utilization
 Move TMG data and servers to a cloud-based system to ensurepreservation
 Build digital infrastructure and run disaster management simulations
using digital twins.

⇒100% of TMG systems will run on cloud-based infrastructure

13

Future image (Eliminating concerns about power,
communications, and data when a disaster strikes)

Secure self-reliant anddecentralized powersources (install solar
panels)Eliminatecommunicationdifficulties (utilize
satellite
communications)Support home evacuation(popularize LCP homes, which areresilient in the event of a disaster)Develop secure digital infrastructure that canhandle various crises (change business systems
and servers to be cloud-based)

Implement area-wide energy distribution(develop conduits and other facilities, establish
VPPs* at city-owned facilities)(*Virtual power plants)

Secure self-reliant anddecentralized powersources (project torealize a hydrogensociety)

Establish systems for publicprivate cooperation (upgrade the
Wi-Fi environment city-wide)

Improve communications
stability on islands (reinforce
undersea cables)14

２ (5) Creating a city that is also highly prepared for infectious diseases
Vision fora moreresilientTokyo inthe 2040s■ Urban activities continue to play out as usual in spaces where people can avoid crowding and gather withpeace of mind.
・ Public spaces have been updated to be more human-centric, creating a city where people can check congestion levels at locations andgather with peace of mind.

■ Residents can choose from diverse modes of transportation, and everyone can move about the city
comfortably, without worrying about the risk of infection.

・ Diversification of transportation methods has progressed through upgrades to the cycling environment and development of watertransportation routes, as well as the more widespread use of next-generation mobility.

・ Thanks to progress in the development of office sharing, the environment for remote work, etc., and promotion of off-peak commuting
and more even distribution of passengers in trains, etc., it is possible to comfortably use the train at any time of day.

Goals (Policy Objectives)

Image of Key Initiatives■ A stage for urban activities where people can gather withpeace of mind

Urban
space

Comfortable public spaces that can be used for a varietyof purposes, such as leisure activities or improving one’s
health, are conveniently located, enabling people to gather
outdoors with peace of mind, anywhere, anytime.

 Public spaces have been reborn as pedestrian-friendly spaces bytransforming areas around major terminal stations, roads, and otherspaces.
 Local community development groups regularly hold a wide varietyof events in open public spaces, etc.

■ Attractive parks and waterfront areas
 Park development and management that leverage the ingenuity ofthe private sector are widely implemented.

■ Methods of commuting to work or school that alleviate
Modes oftransportationWork
styles &lifestyles

Cycling and other new modes of transportation arefirmly established as a way to commute・ Secure approximately 1,800km of bicycle lanes, etc.

worry about infection

Make Tokyo a city where people have flexible options,
including living near their place of work, facilitating
diverse workstyles and lifestyles

15

Development of cycling lanes on metropolitan roads has advanced inTokyo.
New water transport routes have been developed to firmly establish
it as a regular form of transportation.

■ Satellite offices near train stations
Progress has been made with respect to establishing satellite officesnear major railway stations.

Future image (Creating a city that is also highly
prepared for infectious diseases)

Promote the use of bicycles(develop space for bicycle
lanes)Create outdoor spaces that elicit
urban activities (walkable urban
spaces)Develop working environmentsthat are close to home (urban
development throughrenovation of existingbuildings)

Further utilization of spaces(increase opportunities touse public open spaces)

Create outdoor spaces that elicit urban
activities (make areas around train stations
more convenient, create comfortable
spaces, develop green pedestrian spaces)

Create spaces that make use of
the natural environment(develop parks and waterfront
spaces based on user needs)

Facilitate the comfortable use ofrailroads (disseminate information
related to off-peak commuting, etc.)

Revitalize boat transit(using boats as a means oftransportation)

16

Introduce next-generation
mobility (autonomous driving
mobility and the introduction of
new mobility services)

Chapter 4: Projects to Address Each Risks
１ Project structure
Five Risks: Common Perspectives

22 Projects
List of projects (including 33 leading projects*)(hard x soft infrastructure measures)*Pioneering and distinctive projects, mainly new initiatives(1) Protecting residents from increasingly severe floods andstorms01 Prevent flooding due to torrential rain, storm surges
・Climate change scenario for development of infrastructure for the2040s: Based on a２℃ increase in average temperature, theamount of rainfall will increase by 1.1 times, and the sea level willrise as high as by about 60cm.
・Very strong tropical cyclones (maximum wind speeds of at least
59m/s) will form more frequently in the future(2) Building a city that “does not collapse, does not burn,and survives” even in the event of a major earthquake
・Possibility of traffic disruption on designated disaster response routes(in areas with a seismic intensity of upper 6 or higher)・Deaths: about 6,000 ; Buildings damaged: about 194,000
・Elevators stopping, lifelines cut off, etc.
・Suspended delivery of daily commodities to the islands

etc.
02 Protect the lives and livelihoods of residents fromflooding
03 Prevent landslides along with ensuing isolation.
04 Prevent damage from strong winds due to typhoons,etc.
05 Enhance measures for floods and storms on theislands

01 Secure emergency transportation routes
02 Create communities that do not burn by improving
areas with close-set wooden houses
03 Create communities that do not collapse and are notdestroyed by improving earthquake resistance, etc.
04 Ensure sustainability of housing, infrastructure, andresidents’ lives
05 Measures for earthquake resistance and tsunamis on
islands(3) Maintaining urban activities even if there is a volcanic
eruption・In the event of a large eruption of Mt. Fuji (worst case scenario):
Power outages, impeded traffic, etc. due to ash fall (of 2-10cm inmost of the city)
Ash fall equivalent to nearly 10 times the debris from the Great East Japan
Earthquake (about 490 million ㎥)

01 Improve the sustainability of urban infrastructure
02 Rapid restoration of urban infrastructure
03 Establish a system for volcanic ash removal
04 Facilitate the smooth evacuation of island residents

・In the event of an eruption in the islands, residents will have toevacuate

・Further develop regulating reservoirs
・Raise sea walls and river revetments
・Promote urban development on higher ground and the building of
high-standard revetments as urban infrastructure
・Use satellite data to detect improper embankment
・Make sewer system facilities more water-resistantetc.

Details: p.18-

・Expand support for earthquake-proofing to older wooden houses in
the new building standards
・Support for the entire area to be developed, including priority
development areas
・Establish a system for eliminating utility poles on private roads, etc.
and subsidizing the costs
・Implement projects such as roads to serve as access routes forwide-area disaster prevention facilities
・Restore earthquake recovery parksetc.

Details: p.22-

・Enhance the disaster information system and establish a network
for sharing information with relevant organizations, etc.
・Prompt removal of volcanic ash for early resumption of daily life andother urban activities (secure temporary storage sites, etc.)
・Implement ash fall countermeasures for water facilities
・Develop waiting areas for boarding boats and parking lots that areneeded for evacuation
etc.

Details: p.26-(4) Eliminating concerns about power, communications, anddata when a disaster strikes
・Power outage rate in the city caused by a major earthquake directly
striking Tokyo: 11.9％
・Percentage of households possessing smartphones: about 89%
・During the Great East Japan Earthquake, voice calls were restricted by
as much as 70-95%.

01 Power supply measures for infrastructure facilities
02 Creating a city resilient to power supply insecurity
03 Securing communications networks
04 Data integrity and utilization

・Utilize satellite communications
・Project to realize a hydrogen society
・Project to boost locally-produced, locally-consumed renewableenergyetc.

Details: p.29-(5) Creating a city that is also highly prepared for infectious
diseases・Social distancing has become widespread.
・Recommendations for when to wear a mask (indoors: when it is notpossible to physically distance (by about 2 meters), etc.)
・High need for outdoor spaces (ways for their greater use are needed)・Over 50% of people surveyed want off-peak commuting and remote work to
become established practice.

01 Create comfortable outdoor public spaces
02 Open development of parks and waterfront facilities
03 Diversify modes of transportation
04 Develop work environments that are within walking
distance

・Create walkable urban spaces (Nishi Shinjuku)
・Revitalize the Tokyo Expressway (KK line)
・Develop comfortable, charming waterfront spaces along the Sumida
river, etc.
・Increase opportunities to use public open spaces
・Use boats to diversify modes of transportation
etc. Details: p.32-

17

Chapter 4: Projects to Address Each Risks
２ (1) Protecting residents from increasingly severe floods and storms
Project Structure
Projects to address each risks

01 Prevent flooding due totorrential rain, storm surges
etc. to the maximum extent
possible

02 Protect residents’ lives andlivelihoods from all possible
forms of flooding

03 Prevent life-threatening
landslides as well as isolation

04 Prevent damage from strong
winds due to typhoons, etc.

05 Enhance measures for floods
and storms on the islands(Hard Infrastructure Measures)
Further develop regulating
reservoirs, etc.
Raise sea walls, etc.

(Soft Infrastructure Measures)×

AI-based water level forecasting, etc.

×

Use cutting-edge technology to identify
and mitigate risks
Prepare for Distributed Evacuation, etc.
combining multiple evacuations

Implement safety measures for landslides
Reinforce access routes to the Tama
mountains and island areas

×

Grasp risks in advance by using digitaltechnology, etc.
Accurate evacuation and prevention ofisolation

Remove utility poles
Eliminate factors leading to collapse or
flying debris

×

Promote taking measures in advancefor approaching typhoons

Reinforce coastal protection facilities andharbor facilities on islands
Remove utility poles on the islands

×

Assess damage using drones, satellites, etc.
Use digital technology to accelerate andimprove disaster recovery

Prevent the spread of damage
caused by flooding
Accelerate urban developmenton higher ground18

Chapter 4: Projects to Address Each Risks
２ (1) Protecting residents from increasingly severe floods and storms
Leading Projects
Further river development (revetments, regulating reservoirs, etc.)〇 While regulating reservoirs have already demonstrated theireffectiveness, current countermeasures for torrential rain (1/201 annual
probability of exceeding the baseline) still have a long way to go

Extension of the wide-area underground regulating reservoir
beneath Ring Road No. 7(Meguro River Basin Regulator Reservoir (tentative name))

Shirako river undergroundregulating reservoir(In operation)

Example of a case where regulating reservoirs
were effective

Future operationalization schedule

7

Kanda river・wide-area
underground regulating
reservoir beneath Ring
Road No. 7(In operation)

Meguro River Basin Regulating
Reservoir (tentative name)➡Connect to the wide-area underground regulating

Approx.
1,280,000 ㎥

Assumed water level if water is
not withdrawn by the regulating reservoir

Approx.
470,000 ㎥

Water level lowered by amaximum of 1.5 meters

Approx.
340,000 ㎥

2020

Operationalize

Targetapprox.

Targetapprox.

1.5 mil ㎡

1.5 mil ㎡

Consider making into an underground river in the future

Extendedsection“Future Tokyo” Strategy
Target approx. 1.5 mil ㎡ (2030)

91

Kanda River/Ring Road No. 7
Regulating Reservoir

wide-area undergroundregulating reservoir beneath
Ring Road No. 7【Shakuji
River section】(Under construction)

reservoir beneath Ring Road No. 7

Protected Tokyo from flooding during Typhoon Hagibis
in September 2019
Storage ratio:%(490,000㎥)

water
level

wide-area underground regulating
reservoir beneath Ring Road No.

Near term: To speed up the development of regulating reservoirs, achieve
the target (operationalization of a new regulating reservoir(capacity of 1.5 million cubic meters) earlier than originallyplanned

470,000㎥

Operationalize
460,000㎥

2021

Move
forward

2030

2022

〇 Measures to address climate change, such as the future increase in rainfall,
will also be necessary

Medium to long term: Develop facilities to respond to climate change based on the results of studies of new
maintenance methods,2 including underground rivers.
1. The probability each year of rainfall exceeding the baseline amount one or more times a year is 1 in 20 (5%). Using estimates based on actual rainfall to date as areference, this corresponds to 75mm of rainfall or more per hour in the central wards of Tokyo and 65mm or more per hour in the Tama area.
2. From fiscal 2022 to 2023, the Committee for the Study of River Improvement in Tokyo will consider the policy for Tokyo’s river maintenance facilities, etc. in light of
the future impact of climate change. In addition, the Committee for the Study of Countermeasures against Torrential Rainfall in Tokyo will consider the division ofroles, etc. for river and sewer system maintenance, installation of storage and infiltration facilities, and other measures.

19

Chapter 4: Projects to Address Each Risks
２ (1) Protecting residents from increasingly severe floods and storms
Leading Projects
Raise sea walls and river revetments〇 The 1959 Super-Typhoon Vera was a key trigger that led tocommencing the construction of seawalls to protect the entire
Port of Tokyo. Today, the seawalls are nearly complete.
〇 Given the future rise in sea levels (by as much as 60cm in 2100)
and stronger typhoons, the height of the sea walls will be raisedin stages.

Current planned top height of sea walls in each area andfuture planned top height

Chuo Area

Koto Area

Toyosu/Harumi/A
riake-Kita Areas
Minato Area

Tobu Area[Port of Tokyo]

Kasai Area

Fukutoshin Area

〇 As sea levels will rise over time, each area will be studied todetermine the priority, and the height of sea walls will be

Konan Arearaised in stages before they are no longer high enough.
Raising of sea walls (image)seawall
Storm
surge

RisingKoto Area
Chuo Area
Minato Area
Konan Area
Tobu Area
Fukutoshin Area
Toyosu/Harumi/Ariake-Kita Areas

Kasai Area
RisingMean highwater level

Shaded areas indicate the extent ofeach area.
Top row: Current planned top heightBottom
Row: Planned top height in 2100

[Rivers]〇 Consider and implement measures based on the Committee for the Study of River Improvement in Tokyo (end of
fiscal year 2023).

20

Chapter 4: Projects to Address Each Risks
２ (1) Protecting residents from increasingly severe floods and storms
Leading Projects
Promote urban development on higher ground and buildingof high-standard revetments as urban infrastructure〇 (Near term) Using parks and other public facilities, accelerate efforts to secure
elevated locations.
〇 (Medium to long term) Cooperate with the national government to promote urban
development on higher ground to function as a hub, while also keeping the
introduction of new mechanisms in view.
Secure higher ground to serve as a base forDevelop an evacuation network tovertical evacuation sites and out offlooded areas*Image of urban development on higher
ground (building cluster) taken from the vision
for creating a disaster-resilient Tokyo

Public facilities moved
to higher groundrescue and relief operations, etc.
(Arakawa, Edogawa, and Tama rivers)

station entrances by equipping〇 Use satellite observation data toefficiently detect improper
embankment
Image of using satellite data todetect improper embankment*Image taken from the Ministry of Land, Infrastructure, Transport, and Tourism
working group on promoting measures for building on higher ground

Make sewer system facilities
more water-resistant

Flooding measures, etc. for subways〇 Stop flooding through subway

Use satellite data todetect improper
embankment〇 In anticipation of the aftermath of a major earthquake, makesewer system facilities more water-resistant in order to copewith storm surges, etc. in view of the effects of climate change.

Examples of flooding
countermeasures for subways

with or reinforcing watertightRaise the watertight level

plating, etc.

Install a watertight door

〇 Stop the spread of flooding toRaise the height of air vents

other areas through tunnels byCurrently

Water-resistantplanned storm
surge

installing watertight gates, etc.

Outdoors〇 Improve evacuation guidance

indoors

watertight door
Install watertight platingNew
countermeasu
re height

measures in the event offlooding.

21

watertight plating

Chapter 4: Projects to Address Each Risks
２ (2) Building a city that “does not collapse, does not burn, andsurvives” even in the event of a major earthquake
Project Structure
Projects to address each risks

01 Secure the emergency
transportation network in theevent of a major earthquake

02 Create communities that do
not burn by improving
close-set wooden housing areas

03 Create communities that do
not collapse and are notdestroyed by improving
earthquake resistance, etc.

04 Ensure the sustainability of
housing, infrastructure, andresidents’ lives following a(Hard Infrastructure Measures)
Expand and strengthen the emergency
transportation network
Reinforce access to disaster prevention
facilities, etc.

Promote improved fire resistancein urban areas
Reduce the risk of fire spreading
and blocked roads through thedevelopment of designated Routefor Improvement
Promoting the seismic resistance of buildings
Remove utility poles in conjunction with
development, etc.
Promote earthquake-proofing andcountermeasures for liquefaction incommunities
Ensure the sustainability of urban
infrastructure(Soft Infrastructure Measures)×

Utilize AI and other technologies forinfrastructure maintenance and management
Assess damage using drones and social media

×Enhance disaster response capabilities based onregional characteristics
Improve regional disaster prevention capabilities
by using digital technology, etc.

×Promote risk assessment for the
implementation of liquefaction
countermeasures

×major earthquake

05 Measures for earthquake
resistance and for tsunamis
on islands

Remove utility poles on the islands
Secure sites for transport of supplies inthe event of a disaster22

×Improve the home evacuation environment,
including medium- to high-rise housing
Prompt and smooth preparation of evacuation
centers, etc. to receive evacuees
Strengthen citywide measures for people whohave difficulty returning home
Raise residents’ disaster prevention awarenessand improve their response capabilities innormal times

Strengthen system to secure safe
evacuation sites
Assess damage using drones, satellites, etc.
Use digital technology to accelerate andimprove disaster recovery

Chapter 4: Projects to Address Each Risks
２ (2) Building a city that “does not collapse, does not burn, andsurvives” even in the event of a major earthquake
Leading Projects
Expand support for earthquake-proofing to older
wooden houses in the new building standards〇 By promoting improved earthquake resistance inbuildings constructed under old earthquake-proofing
standards (those built before 1981), damage fromearthquake tremors or buildings collapsing has beensteadily decreasing.
〇 To further reduce damage, it will be effective to improvethe earthquake resistance of around 200,000 wooden
houses constructed under lower earthquake-proofing
standards (built between 1981 and 2000), prior to thelatest earthquake-proofing standards that came into
effect in 2000.

Damage mitigation effects(estimates for damage following an earthquake under Tokyo, etc.)
Item
項目

Decrease deaths and○ 死者・全壊棟数は、前completely destroyed houses
回想定から３～４割減
by 30-40% from the previous
少estimates
It is estimated that
○ さらに対策を進めるこ
implementing furtherとで、死者数、全壊棟
measures can reduce the
数を減少させることがnumber of deaths and thenumber of completely
可能と推計

Promote
促進① 1
100% earthquake耐震化率100%
proofingrate(1981
standards)（1981年基準）

Decrease by

死者数
Completely
約5,100人
destroyedhouses:around120,000
buildings

全壊棟数
約12万棟

Previous
estimates
前回想定結果for damage

Promote
促進② 2Year 2000

2000年基準
standards

Decrease by about

約４割減少
about 40%

80%
約８割減少

Deaths:around5,100people,

Around

約６割減少

Decrease by about60%

3,200 people,
約3,200人
around 81,000

buildings
約８.1万棟

Around1,200 people,
約1,200人
around 32,000

buildings
約３.2万棟

destroyed buildings from theprevious estimates
Current
estimates
今回想定結果for damage

1981
standards
1981年基準

Around500 people,
約500人
around 14,000
buildings
約1.4万棟

2000
standards
2000年基準

Building Age of Housesin Tokyo
About 200,000 houses of those built to the newer
standards (prior to 2000) are not sufficiently
Aboutearthquake-resistant
700,000

・As of 2019, the ratio of houses in Tokyo that meet the year 2000
earthquake-proofing standards is estimated to be in the upper 80%
range.
・Completing earthquake-proofing is estimated to be able to reduce

housesthe number of deaths by about 80%.
(from estimates for damage following an earthquake under Tokyo, etc.)

Currently
現況
92%住宅の耐震化率
earthquakeproofing rate forhouses,etc. など
92%

Promote improved earthquake
耐震化の推進resistance

About 560,000
housesAbout
2,990,000
housesAbout 200,000
houses

A wooden house built to the pre-2000
standards that collapsed due to the
Kumamoto earthquake

About
2,460,000
houses〇 Launch new support to improve the earthquake

Houses that meetthe year 2000
standards

resistance of wooden houses built under the newer
standards (between 1981 and 2000), eliminatingOld
standards
旧耐震
newer standards (before
新耐震(2000年以前)
2000)
latest standards (2001 and新耐震(2001年以降)
on)nearly all houses that do not meet the year 2000
standards.

insufficient earthquake耐震性不十分
proofing

23

Source: Quick Report of the Field Survey and Building Damage
by the 2016 Kumamoto Earthquake(National Institute for Land and Infrastructure Management)
http://www.nilim.go.jp/lab/hbg/0929/pdf/isshiki.pdf

Chapter 4: Projects to Address Each Risks
２ (2) Building a city that “does not collapse, does not burn, andsurvives” even in the event of a major earthquake
Leading Projects
Support for the Development Districts
including the Priority Development Districts〇 Through support for efforts including the removal or reconstruction of oldhouses, renovations to ensure a city that does not burn have made progressin areas with close-set wooden houses, but support must be expanded inorder to speed up progress.
(Ratio of fire-resistance in the Priority Development Districts : 64.0% of thearea for fire-proofing as a whole (reference value as of end-2020) against the2025 target of 70% in half the areas)〇 Priority Development Districts : Add subsidies for building construction
expenses in the Fireproof Zone system (strengthen existing program)〇 Development Districts outsides priority areas: Establish subsidies fordesign and supervision costs associated with removal or reconstruction(new)LegendDevelopment Districts
Priority Development Districts
Development Districts outsides priority areas

Status of identifying areas to the Development
Districts and the Priority Development Districts

Establish a system for eliminating utility poles on
private roads, etc. and for subsidizing the costs〇 While support is provided for removing utility poles on private roads, etc. in
the Priority Development Districts, because private roads, etc. that pose ahigh risk of utility poles collapsing span entire areas with close-set wooden
houses, it is necessary to encourage the removal of utility poles without
missing any potential needs.
Private roads, etc.

City road(Road eligible for subsidies)〇 Going forward, expand the areas eligible for subsidies to the Development Districts that are high-risk in theevent of a disaster and to areas for promoting disaster prevention-oriented redevelopment.
〇 Refine existing programs by compiling more case studies early on.

24

Chapter 4: Projects to Address Each Risks
２ (2) Building a city that “does not collapse, does not burn, andsurvives” even in the event of a major earthquake
Leading Projects
Implement projects such as roads to serve as accessroutes for wide-area disaster prevention facilities〇 Develop roads in the vicinity of the Tachikawa wide-area disasterprevention base, and add raised intersections with the JR Ome line.
〇 Promote efforts in cooperation with the national government, etc. in orderto operationalize the Harumi line extension of the Metropolitan Expressway,which will contribute to strengthening the links between the city center andthe waterfront area.
TMG-planned roads in the vicinity of theTachikawa wide-area disaster prevention base

Area surrounding the Tokyo Bay waterfront corewide-area disaster prevention facility (Ariake Oka)

Enhance and strengthen
disaster prevention forapartment buildings, etc.
〇 Support home evacuation in medium- tohigh-rise housing by promoting thesecuring of power sources in the event ofan emergency, strengthening cooperation
with manufacturers to ensure rapid
restoration of elevators, and raisingawareness of daily stockpiling.
Development of the home evacuation environment inmedium- to high-rise housing (image)(Hard measures)

立川広域
防災基地

Tachikawadisasterprevention base

Metropolitan
Expressway
首都高速晴海線
Harumi Lineextension
延伸部

Tachikawa Higashiyamato
立川東大和線
line (Tachikawa Routes 3, 3,（立川３・３・30号線ほか）
30, etc.)

国営昭和
記念公園

（ハード）
・earthquake-proofing
・earthquake control
・耐震対策
・measures to prevent
・地震管制
getting trapped inside
・automatic diagnosis and・閉じ込め対策
temporary restoration,
・自動診断仮復旧(soft measures)・establish a system for（ソフト）
restoration
・復旧体制の構築

Rapid
restoration
エレベーターのof elevators
早期復旧
EV
EV
boa
rd盤

西立川

EV
EV
machi
機械
nery

Continuation ofhome evacuation,

Commercial
商用電源
power source

JR中央線

reduce the burden on
在宅避難の継続
control of
避難所の負荷低減
evacuation centers,
避難の抑制 smooth operation andevacuation

円滑な運営管理management

立川
EV

EV
elevator
ｴﾚﾍﾞｰﾀｰsPower
停電
outage29

Ring Road No. 3 (from環状第３号線
Kachidoki
to Shiba Koen)

Distrib分
ution
電board,
盤（勝どき～芝公園）

256

Shinonome
JCT
東雲JCT

Ｅ２０

Transfo
受変電
rmer
設備
substation

Emergen
非常用
cy
power
generati
発電onequipment
設備

２０

Chuo中央南北線ほか
Nanboku line, etc.
(Tachikawa Routes 3, 1, 34)（立川３・１・34号線）

Shin-Okutama highway
新奥多摩街道(Tachikawa
Routes 3, 4, 5,（立川３・４・５号線ほか）
etc.)

国立府中IC

Wide-area disaster preven
広域防災拠点施設
tion
facility (Ariake Oka district)（有明の丘地区）

Restore earthquake recovery parks〇 Earthquake recovery parks were developed adjacent toelementary schools under the reconstruction plans following
the Great Kanto Earthquake by proposal of the city of Tokyo.
〇 On the occasion of 100 years passing since the Great Kanto
Earthquake, TMG is encouraging the restoration of these parks
by the relevant wards, based on the thinking of that time.
〇 By restoring earthquake recovery parks, we hope to raiseawareness of disaster prevention among all generations.

25

Oil
tank
ｵｲﾙﾀﾝｸEvacuation
center
避難所
Promotedaily
日常備蓄のstockpiling
促進

家庭用
Fuel
cell
cogenerat
燃料電池
ion
ｺｼﾞｪﾈ
system建物内
foruse inﾚｰｼｮﾝ
共用部電力 homes
ｼｽﾃﾑ

Evacuation
避難Power forcommon areas in
the building

secure power
非常時のsupplyin the eventof an
emergency
電源確保

City
Gas
都市ガス

damageto buildings,
建物被害
home evacuation is（在宅避難が困難）
difficultUtilize the city’s excess
capacity to promote theprotection of visitors to Tokyo〇 Ensure “room to grow” for privatesector measures for people who havedifficulty returning home incooperation with local community
development councils that offer help
to visitors to Tokyo in areas aroundmajor train stations, etc., dependingon the disaster situation.

Chapter 4: Projects to Address Each Risks
２ (3) Maintaining urban activities even if there is a volcanic eruption
Project Structure
Projects to address each risks

01 Improve the sustainabilityof urban infrastructure in
the event of ash fall

02 Rapid restoration of urban
infrastructure in the event ofash fall

03 Establish a system for volcanicash removal as a city-wide
effort to restore daily life

04 Smooth evacuation of island
residents in the event of a
volcanic eruption(Hard Infrastructure Measures)

Ensuring the functioning of lifelines(power, water)

×(Soft Infrastructure Measures)

Enhance and utilize cooperation on ash
fall forecasting

Establish a system for early restoration of road functions
Strengthen cooperation for early restoration of the transportation
network
Restore lifelines (power, sewage, etc.) as soon as possible

Remove volcanic ash in order to reopen facilities as soon as possible
Dispose of volcanic ash to restore urban functions
Foster awareness of preparing for ash fall

Develop evacuation facilities

26

×

Assess damage using drones, satellites, etc.
Prepare in advance to ensure a smooth evacuation
Use digital technology to accelerate and improvedisaster recovery

Chapter 4: Projects to Address Each Risks
２ (3) Maintaining urban activities even if there is a volcanic eruption
Leading Projects
Enhance the disaster information system and establish a
network for sharing information with relevant organizations, etc.
〇 As the areas that will be impacted by ash fall vary significantly
depending on the wind direction, it is vital to assess damage quickly.
〇 Enhancing coordination with relevant parties on disaster information isnecessary for emergency countermeasures and accelerating therestoration of infrastructure (common to response to floods and storms,
earthquakes, etc.).

Enhanced disaster information system〇 Add the display of national ash fall forecasts to the TMG disaster
information system.
〇 Establish a system for communicating with relevant local
governments and specified public institutions, etc.
(infrastructure, transportation, etc.)

Prompt removal of volcanic ash for early resumption of daily life
and other urban activities (secure temporary storage sites, etc.)〇 Establishing a systematic method for disposing of volcanic ash isnecessary in order to restore urban functions
・The estimated amount of ash fall is equivalent to about 10 times theamount of debris from the 2011 Great East Japan Earthquake.
・The basic method for ash disposal (including the division of roles in theregion) is being considered in collaboration with the national government.

Process from removal of volcanic ash to final disposal
Roads
道路

鉄道、その他管理用地
managed land

Railroads and otherHomes,
town areas, etc.
住宅・市街地等

Roadway
accumulation
車道集積

Temporary storage within
管理用地内仮置
managed land

Temporary storage on owned land
所有地、近隣集積地仮置
andneighboring accumulation area

Store temporarily
at temporary storage sites if necessary
必要に応じ、一時的な仮置場に仮置き〇 Sort out the division of roles between relevant organizations
and the steps to be taken based on research and discussionof temporary storage sites for volcanic ash and methods forcollection and transport.

27(Final) disposalof the volcanic ash
火山灰の（最終）処分

Chapter 4: Projects to Address Each Risks
２ (3) Maintaining urban activities even if there is a volcanic eruption
Leading Projects
Implement ash fall countermeasures for water facilities〇 Add roofing to the sedimentation tanks at the Nagasawa water purification plant,
which is at risk of exceeding the criteria for water quality in the event of ash fall.
*The impact from ash fall at large water purification facilities
Simulation of ash fall deposit amounts (WSW winds prevailing)(Higashi Murayama, Kanamachi, Misato, and Asaka) is not at a level that(created based on a national study on ash fall in the event of a large eruption)
would result in exceeding the water quality criteria, and can be reduced
Legendfurther with advanced water purification treatment.
Depositing（cm）

Asaka

Development to add roofing to sedimentation tanks (image)Before installation

Higashimurayama

Misatokanamachi

After installation
Nagasawa

Mt FujiMore than 300.0

Develop waiting areas for boarding boats and parking
lots needed for evacuation after a volcano disaster〇 Renovate waiting areas for boarding boats located within 3km of the mouth of a volcano to ensure that roofing is designed to
specifications that take cinders into account and into a facility that has a parking lot.
Development of Port of Miike passenger waiting area (image)Current waiting areafor boarding boats

Igatanifishing port
伊ヶ谷漁港

New waiting area for boarding boats(roof built to specifications that takeburning cinders into account)
Mt.雄山
Oyama
Miike
Port
三池港

Ako
fishing port
阿古漁港

28

Chapter 4: Projects to Address Each Risks
２ (4) Eliminating concerns about power, communications,and data when a disaster strikes
Project Structure
Projects to address each risks

01 Power supply measures forinfrastructure facilities that
protect the lives of residents

02 Create a city resilient topower supply insecurity as acity-wide effort

03 Ensure a reliablecommunications network

04 Ensure data integrity andutilize data to improve
resilience(Hard Infrastructure Measures)
Promote the securing of self-reliant anddecentralized power sources
Implement area-wide energy distribution atcity-owned facilities(Soft Infrastructure Measures)×

Cooperation for stable power supply
Cooperation for early restoration of
power after an outage

Promote the securing of self-reliant anddecentralized power sources
Promote area-wide energy distribution

×Support for home evacuation
Support for the introduction of disasterprevention measures

Ensure an environment in which everyone
can safely access digital services×

Establish systems for public-private
cooperation

×

Realize advanced disasterprevention measures through theeffective use of data

Develop the digital infrastructurenecessary for business continuity in theevent of a disaster

29

Chapter 4: Projects to Address Each Risks
２ (4) Eliminating concerns about power,
communications, and data when a disaster strikes
Leading Projects
Utilize satellite communications〇 It is necessary to ensure communications redundancy by using multiple transmission routes, even in theevent of communications failures or a disaster.

〇 Securing a new means of high-speed internet communications in addition to improving base stations will beeffective for the Tama mountains and on the islands as well as for boats or other locations where
communications difficulties cannot be easily resolved due to the lack of mobile base stations.
〇 For this reason, a project is being launched to utilize satellite communications to secure communications
redundancy and eliminate areas with communications difficulties, such as the Tama mountains, island areas,
and boats.

The Tama mountains, the islands, and ocean-going ships will be the first to adopt state-of-the-art
satellite communications, aiming to eliminate areas with communications difficulties and achieve a“Connected Tokyo” where anyone can access digital services.
Use of satellite
communications

sky

Smart poles

Boats

Island areas

Mountain
areas

sea
Land

Optical fiber

Undersea cables

30

Chapter 4: Projects to Address Each Risks
２ (4) Eliminating concerns about power,
communications, and data when a disaster strikes
Leading Projects
Project to realize a hydrogen society

Project to boost locally-produced,
locally-consumed renewable energy〇 Consider systems for supplying hydrogen such as pipelines
and promote full-scale use of renewable energy-derived
green hydrogen* in all fields. (*Produced using electricity
derived from renewable energy sources.）〇 Support the introduction of solar power generation andstorage batteries by municipalities and private-sectorbusinesses in order to increase the spread of locallyproduced, locally-consumed energy.

Use of green hydrogen
Transportation

Industrial use

Local production and consumption of renewable energy

Commercial andresidential use

Renewables-derived electricity & use of green hydrogen

LegendGreen hydrogen

Renewableenergyelectricity

PowergenerationGreenhydrogenRenewable energy
electricity

Change business systems andservers to be cloud-based〇 It is vital that IT systems and information assets

necessary for business continuity are properly
preserved in the event of a disaster.
〇 Develop digital infrastructure that allows data to be
used and business operations to continue even if

Switching to cloud-based systems, etc.
Promote making all TMG systems cloud-based①全庁システムのクラウド化の推進
Make some business
一部業務で先行してoperations cloud-based
クラウド化
beforeothers

全面的にクラウド化してGo
completely cloud-based andfully
utilize SaaS, etc.
SaaS等をフル活用

Full-scale
本格稼働
operations fromfiscal 2025
2025年度～Promote the switch to cloud-based systems and②各局システム・サーバのクラウド化の推進
servers at each bureau

government buildings sustain damage.
各局の業務システムや各局ファイルサーバを
Changebusiness systems and file servers at each bureau tobeクラウド化
cloud-based

31

Existing
business systems
既存業務システム

Chapter 4: Projects to Address Each Risks
２ (5) Building a city that is resistant to infectious disease
Project Structure
Projects to address each risks

01 Create comfortable spacesthat will lead to enhanced
outdoor urban activities(Hard Infrastructure Measures)

Create outdoor spaces that can elicit avariety of urban activities(Soft Infrastructure Measures)×

02 Develop open parks andwaterfront areas thatanyone can use

Further utilization of these spaces by expanding
the scope of ways they can be used
Making a Tokyo a smart city by obtaining anddisseminating information on the movement ofpeople, etc.

Create unique spaces that make use of
the natural environment×

Use these spaces in a more appealing way
through the ingenuity of the private sector
Disseminate data on crowd congestion

Promote the use of bicycles
Revitalize boat transit

×

Facilitate the comfortable use of railroads
Introduce next-generation mobility

Develop the environment for remote
working and working close to home×

Raise awareness to create opportunities
for diverse ways of living and working

03 Diversify modes oftransportation that also
contribute to reducing
the risk of infection

04 Improve working
environments that arewithin walking distance32

Chapter 4: Projects to Address Each Risks
２ (5) Building a city that is resistant to infectious disease
Leading Projects
Create walkable urban spaces where people can unwind andenjoy taking a stroll (Nishi Shinjuku)〇 Half a century has passed since the construction of the Shinjuku subcenter area, and reorganization is necessary to
make it into a human-centric urban space in response to changes in society and the surrounding environment.
・Shinjuku’s vast open space and roads are not being utilized, and it is not a comfortable place to be for workers or visitors.
・It is not an easy environment to navigate, as destinations like train stations and parks are far apart, and there are physical barriers
to easy movement such as differences in elevation.
・Meanwhile, the COVID-19 pandemic has created the need for new urban development, such as outdoor workspaces.

〇 Create iconic and bustling spaces through an integrated reorganization of roads, public spaces, etc. (No. 4 road,Citizen's Plaza, etc.)〇 Promote the introduction of next-generation mobility and reorganizing the areas around TMG, etc.
〇 Utilize cutting-edge communications infrastructure, etc. to develop comfortable workspaces for indoor oroutdoor use.

Integrated reorganization of roads,
public spaces, etc.

Public spaces that give rise to diverse
interactions and ways of spending time there

33

Comfortable outdoor work spaces

Chapter 4: Projects to Address Each Risks
２ (5) Building a city that is resistant to infectious disease
Leading Projects
Revitalize the KK line as a pedestrian-centered public space〇 As a measure to ensure the smooth traffic flow of large vehicles moving in a circular direction, which will benecessary as a section of the Metropolitan Expressway in the Nihonbashi area is being moved underground, a
policy has been announced to develop the Shin-Kyobashi connecting route (underground) to serve as a newloop route for the city center, which will significantly reduce the role of the Tokyo Expressway (KK line) as an
automobile-only roadway.
〇 To create new value and appeal for Tokyo, the upper area of the KK line will be revitalized and utilized as apedestrian-centered public space.

〇 Taking advantage of the KK line’s existing form as an elevated roadway, construct a wide-area pedestrian
network along with a large-scale green network utilizing the continuous outdoor space, making use of existing
structures to enhance the value and attractiveness of the area.
〇 The target timeline for completion of all sections of the KK line’s upper area is between 2030 and 2040, withcertain sections opening earlier through phased development in coordination with urban development in thearea.
Map showing location

Tsukiji

Ginza

Example of development details

Shiodome

Shinbashi

Kyobashi
Yaesu

HibiyaYurakucho

34

Chapter 4: Projects to Address Each Risks
２ (5) Building a city that is resistant to infectious disease
Leading Projects
Develop comfortable, charming waterfront
spaces along the Sumida river, etc.

Increase opportunities to use public
open spaces, etc.

Expand projects centeredon the Sumida river〇 Relaxing the physical area requirements for utilizing〇 Initiatives to develop focal points
and waterfront sites in Asakusa andRyogoku will be expanded to the

Expanding the focal points of
隅田川の「川の軸」
theSumida river to the
upstreamareaを上流域へ展開

public spaces will make it possible for small-scale
activities like open-air cafes and sales of goods to takeplace.

upstream areas of the Sumida river.

Activities conducted in public open spaces (image)

A bustling waterfront space
Asakusa
浅草
Ryogoku両国

tsukuda/Etchujima
佃・越中島

築地 隅田川下流域のTsukiji
Expanding efforts forthe downstream area

取組を拡充
of the Sumida river

Open-air cafes

Art exhibits

Promote the renovation of existingbuildings (to upgrade functions)

Use boats to diversify
modes of transportation〇 Consider and provide support for implementing boat transit〇 Select areas for promoting renovation (Kanda isroutes, which will offer new lifestyle options, such as theenvisioned among others) and establish a mechanism

ability to sit and do some work or to enjoy the scenery while

to support the functional renovations of buildings

commuting to the office by boat.

(effective use of building stock throughout the city).
Renovations (image)Transit by boat (image)Business Exchange
LoungeInformation
dissemination andshowcase of art,
craftsmanship, etc.

Where startups gather
Coworking space

Spaces that face the town
Cafes and Shops

Comfortable pedestrian andrecreational space for walking

35

Showing the face of
livelinessChapter 4: Projects to Address Each Risks
３

Surviving a Tokyo metro area-wide complex disasterFor complex disasters, which can cause severe and prolonged damage, the project’s approach is organized around pre-disasterand post-disaster timelines. Here, two specific examples are presented (a major earthquake followed by a large typhoon,
and infectious disease combined with flooding/storm or an earthquake) to illustrate the measures and projects undertaken.

Example of efforts (major earthquake ➡ large typhoon)
Aim ofthe efforts

There is a risk of increased flooding from places where damage to seawalls, etc. was caused by a major earthquake, andpeople may not be able to stay in evacuation centers or in their homes. After accelerated forecasting and assessment ofdamage, it will be important to provide accurate guidance to safe evacuation sites by disseminating information on
appropriate evacuation sites and routes, while also considering wide-area evacuation in accordance with the disaster situation.

Hard Infrastructure
Measures
Efforts foreach crisis(reprint)

Soft Infrastructure
Measures×

Develop evacuation sites incoordination with buildingon higher ground

Assess damage

Disseminate
information

Conductevacuation

Quick forecasting andassessment of damage
when a disaster strikes

Step up dissemination of
information on
evacuation sites androutes as necessary

Establish a system tosupport area-wide
evacuation

Enhance disaster information
system functions

Disseminate information
appropriate to the disaster situation

Consider area-wide evacuation

Earthquake- and waterproofing of river facilities
and coastal protection
facilities
Reinforce concrete revetments
Add more
reinforcement
bars

Increase thicknessof concrete

Status of recovery
from the earthquake

適切な避難
情報の発信

Disseminate adequate
evacuation
information

Not open yet
open withspace available
open but
crowded×

Improvefoundations

Information on theapproaching typhoon

full capacity
unknown

Safe
area

Disaster area

Significant risk due tosubsequent damage

Evacu
ation

被災地

Evacuation

36

Chapter 4: Projects to Address Each Risks
３ Surviving a Tokyo metro area-wide complex disaster
Example of efforts (infectious disease + flooding/storm or earthquake)
If a large typhoon or an earthquake strikes in the midst of an epidemic, the risk of infection spreading at evacuation sites
increases. Speeding up the forecasting and assessment of damage and disseminating information as necessary about
crowding conditions at evacuation centers and which ones are open will help prevent concentration at particular evacuation
centers. In addition, taking appropriate measures to prevent infection at evacuation centers will allow people who have no
choice but to evacuate to shelters to stay there with peace of mind.

Aim ofthe efforts

Hard Infrastructure
Measures
Efforts foreach crisis(reprint)

×Use various urban
development programs, etc.
to promote the installationof emergency generators
Central tower
セントラルタワーSouthern tower
Northern
tower
サウスタワー
ノースタワーSoft Infrastructure
Measures

Conductevacuation

Assess damage

Disseminate
information

Quick forecasting andassessment of damage
when a disaster strikes

Further promotion of
distributed evacuation inview of insufficientevacuation center capacity

New新本館
main building

Enhance disaster information
system functions

Disseminate information
appropriate to the disaster situation

Status of recovery
from the earthquake

×

適切な避難
情報の発信

Disseminate adequate
evacuation
information

full capacity
unknown

TroublePower
receiving
facilities

Pump

Generator

Not open yet
open withspace available
open but
crowdedInformation on theapproaching typhoon

XYZ ElectricCompany

37

Promote measures toprevent infection in
evacuation centers
Flow from arriving at theevacuation center to reception(measures to prevent infection)

Hibiyapark
日比谷公園

Popularize LCP homes, which
are resilient in a disaster, andstrengthen disaster prevention
for apartment buildings(rapid restoration of elevators)

Support self-support andmutual-support by Tokyo
residents and businesses

Chapter 5: Project Promotion
１ Concept for project promotion（１）Steady promotion<Implement projects in coordination with the “Future Tokyo: Tokyo’s Long-Term Strategy” >○ This project will be appropriately reflected in the new upgraded version of the “Future Tokyo” strategy to be formulated at the beginning of the new year,with the progress of the respective projects understood and managed within the promotion of the strategy.
○ The “Basic Policy for Measures Against Heavy Rainfall” is scheduled to be revised and “River Facilities that Consider Climate Change” to be formulated in FY 2023, withthe results to be reflected in this project in the same fiscal year.

＜Strengthen execution capabilities for project promotion>○ To ensure realization of the vision for Tokyo in the 2040s, it will be necessary to speed up project execution and strengthen the system for execution more than ever.
○ Specific initiatives will be advanced to establish work order procedures and execution systems.
Accelerate
project
execution

・ Active use of multi-year contracting
・ Introduce ordering methods that can better utilize
the technology and know-how of the private sector
・ Review how design estimation operations should be
etc.

Strengthen thesystem forexecution

・ Secure and train technical staff who will be needed to steadily
implement the project・ Make improvements to how the appeal of technical work is
disseminated and diversify recruitment methods to secure technical staff
・ Allocate manpower from regular duties to duties related to key policies
etc.

（２）Raise momentum for project promotion

Tie in with the movement
marking 100 years since theGreat Kanto Earthquake○ Proactively communicate the significance of the project and its contents to develop a shared sense of urgency
with Tokyo residents and businesses.
○ Raise awareness effectively to further strengthen self-support, mutual support and public support.

２ Effective project promotion measures<Collaboration Model>(1) Collaborating with diverse entities

Residents &communities○ Implement measures while working in close cooperation with diverse entities.
These include measures addressing challenges that cross jurisdictions, measures
tailored to local conditions, measures to encourage efforts by businesses, such as
strengthening lifelines, and measures by Tokyo residents for self-support andmutual support(2) Promoting DX<Examples ofefforts>○ From the standpoint of maximizing the effectiveness ofhard infrastructure preparations, initiatives for DX will be
integrated to increase their synergistic effects.

Collaborate

Government
agencies

Businesses

Collaborate
TMG

Realizing aresilient andsustainableTokyo

Measures for floods
and storms

Measures forearthquakes, etc.

Measures for volcanoes,
etc.

Building a city also resilient
to infectious diseases, etc.

Use state-of-the-art
technology to recognize
risk (simulation of flooding
damage using digital twins)

Grasp the damage
situation using
drones and social
media

Enhance and utilize thesystem for sharing disaster
information (consolidate andshare disaster information)

Become more resilient bycollecting, analyzing, anddisseminating data
(using sensors and smart poles)

３ Disseminating information to Tokyo residents, etc.
○ In order to minimize damage and keep people from panicking when a disaster strikes, it is essential to promptly and accurately share information on
evacuation and the actual state of damage and encourage people to behave calmly.
○ Provide information on disaster risks to residents, businesses, municipalities, etc. in advance, and in the event of a disaster, proactively disseminate informationin an integrated way and by utilizing digital technology.

38

<Using the centennial of the Great Kanto Earthquake as an opportunity to roll out a movement>
Self-Support
Promote efforts among all generation to protect
themselves

Mutual Support
100 Years Since
the Great Kanto Earthquake
Tokyo has survived through many disasters
Let’s be prepared for tomorrow

Symposium on the Great
Kanto Earthquake for reawareness of experiences
100 years ago

Enhanced disaster
preparedness
content from thestandpoint ofdiversity

Comprehensive disaster
drills befitting thecentennial of the Great
Kanto Earthquake

Preparation of educationmaterials for students

Promote cooperation with municipalities, communities,
and the private sector to improve disaster preparedness

Public Support
Promote understanding of urban development andbuilding disaster-resilient communities

Visiting lectures on themes
based on lessons learned
from earthquake disasters,
etc.

Strengthening cooperation
with diverse entities, fromneighborhood associations
to companies and NPOs

Effective disaster
preparedness drills
using AR technology

Restoration of Great Kanto
Earthquake recovery parks

Creation of PR videos for
the Great Kanto
Earthquake archives

Enhancing awarenessof the need to remove
utility poles throughurban development

39Chapter 6: Project Scale
１ Rough estimate of the project’s scale○ The scale of future projects to achieve this project is as shown below.
○ In implementing individual projects, it will be necessary to promote highly effective measures while taking into account the estimateddamage and the effects of the projects.

（１）Total project scale (rough estimate)
Total project scale(rough estimate)*The project scale required to implement this project through the 2040s is shown.
*Some projects will be completed after the 2040s.

next 10 years

JPY 15 Tn

6 Tn*Totals for each category do not add up to the grand total as some projects address（２）Breakdown of project scale (rough estimates)
more than one type of crisis.
*These figures represent the current scale of the project and may change in the future.

Category

Project scale breakdown(rough estimates)

Key projects

next 10 years
Protecting residents fromincreasingly severe floods andstormsJPY 6.6 Tn

2.0 Tn・ Further river upgrades (revetments, regulating reservoirs, etc.)
・ Strengthening sewer system stormwater runoff measures
・ Building communities on higher ground as urban infrastructure

Building a city that “does notcollapse, does not burn, andpeople survive” even in theevent of a major earthquake

JPY 9.5 Tn

3.7 Tn・ Projects for disaster response route networks, roads to serve as access routes, etc.
・ Building the earthquake resistance of quays
・ Earthquake-proofing of water supply and sewer lines

Maintaining urban activities
even if there is a volcanic
eruption

JPY 2.1 Tn

0.6 Tn・ Ash fall countermeasures for water supply facilities
・ Establishing a system for clearing roads in cooperation with the national
government, municipalities, etc.
・ Building waiting areas for boarding boats and parking lots needed for evacuationin response to volcanic eruptions

Eliminating concerns about
power, communications, anddata
when a disaster strikes

JPY 0.6 Tn

0.6 Tn・ Supporting the introduction of PV systems and storage batteries, etc.
・ Becoming a city that can serve as a model for a hydrogen society
・ Efforts to upgrade the Wi-Fi environment throughout the city

Building a city that is resilient
to infectious diseases

JPY 0.6 Tn

0.3 Tn・ Enhancing the convenience of areas around train stations and creating expansive
spaces by seizing opportunities provided by urban development projects
・ New development of metropolitan parks and marine parks based on user needs
・ Building bicycle lanes

40