In the event of an earthquake, ensuring that buildings along major arterial roads—which serve as the lifeline for emergency medical and rescue operations as well as the transport of emergency relief supplies—are seismically retrofitted is essential to building a disaster-resilient city.
Therefore, to promote measures related to seismic retrofitting, we hereby publish the status of seismic retrofitting for buildings along designated emergency transportation routes (as of the end of June Reiwa 8) in accordance with the Ordinance Promoting the Seismic Retrofitting of Buildings Along Emergency Transportation Routes in Tokyo (hereinafter referred to as the “Ordinance”), as outlined below.
Please note that since the end of June Reiwa 2, we have been publishing the seismic retrofitting status of buildings along designated emergency transportation routes using indicators such as the section coverage rate, which accurately reflects the traffic functionality of these routes.

1. Section Reach Rate (The probability of reaching a given section from the entrance at the prefectural border)

• Section Reach Rate Chart (as of the end of June, Reiwa 8) — Attachment 1 (PDF: 226 KB)
• Chart Showing Changes in Section Reach Rates (As of the End of December Reiwa 7 ➡ As of the End of June Reiwa 8) Appendix 2 (PDF: 225 KB)

2. Overall Achievement Rate (Average of Segment Achievement Rates)

Overall Achievement Rate = 94.2%

	Overall Achievement Rate
End of December, Reiwa 1	91.1%
End of June, Reiwa 2	91.4%
End of December, Reiwa 2	91.6% (91.62%)
End of June, Reiwa 3	91.6% (91.67%)
End of December Reiwa 3	92.0%
End of June, Reiwa 4	92.6% (92.61%)
End of December Reiwa 4	92.6% (92.66%)
End of June, Reiwa 5	92.8%
End of December, Reiwa 5	93.0%
End of June, Reiwa 6	93.4%
End of December, Reiwa 6	93.8%
End of June, Reiwa 7	94.0%
End of December, Reiwa 7	94.1%
End of June, Reiwa 8	94.2%
Points of Improvement Since Last Time	0.1

3. Legal Basis

Article 17, Paragraph 1 of the Ordinance (Public Disclosure of Seismic Retrofit Status, etc.)

4. Notes

For more information, please visit the Tokyo Metropolitan Government Earthquake Resistance Portal.

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This project is an initiative to promote the “Tokyo 2050 Strategy.”
Strategy 21: Building a Resilient City—“Promoting the Development of a City That Doesn’t Collapse and Saves Lives”

Contact: Urban Development Bureau, Urban Planning and Construction Department , Construction Planning Division Phone: 03-5388-3362 Email: S0000168(at)section.metro.tokyo.jp *The email address has been changed to prevent spam. Please replace (at) with @ when using this email address.