Site Policy

1. Policy

This website aims to conform to the Japanese Industrial Standards JIS X 8341-3 "Guidelines for older persons and persons with disabilities—Information and communications equipment, software and services—Part 3: Web content" (hereinafter referred to as "JIS X 8341-3") at level "AA".

1. Scope

This applies to the official website of the TOKYO Design Manhole Digital Rally (https://www.tokyo-manhole.metro.tokyo.lg.jp) and all of its subpages.

2. Target Deadline and Conformance Level

• Deadline: March 31, 2025 (Reiwa 7)
• Conformance Level: Our target is to comply with Priority Level A (which includes both Level A and Level AA under JIS X 8341-3:2016).

1. Recommended Environment

To ensure safe and comfortable use of this site, we recommend using one of the following browsers:

1. Latest version of Google Chrome
2. Latest version of Mozilla Firefox
3. Latest version of Safari
4. Latest version of Microsoft Edge

2. Technology Used

In order to improve the user experience and continuously enhance our site, we use cookies to collect information when users visit our website.
Cookies are data sent from our server to your browser and stored on your computer. These do not include any personally identifiable information such as name, address, or phone number. Cookies do not have any direct adverse effect on your computer.
We may also use cookies from third-party companies contracted by the Tokyo Metropolitan Government to analyze access to pages.

JavaScript
Some content on this site uses JavaScript to enhance functionality. If JavaScript is disabled in your browser settings, some content may not display or function correctly.

SSL (TLS)
For security, we use TLS encryption for some services on this website. To use these services, your browser must support TLS 1.2. Personal information such as name, address, or phone number entered by users is automatically encrypted before transmission. Even if data is intercepted, it cannot be read. Note that depending on firewall settings, some pages may not be accessible.

PDF
To view PDF files, Adobe Acrobat Reader by Adobe Systems is required. If you cannot view the content properly, please install or update to the latest version.

3. Information Security

This website is committed to protecting information assets from threats in order to maintain public trust and fulfill our responsibilities as a government organization.

• 1. We implement proper security measures to prevent unauthorized access, destruction, alteration, loss, or leakage, and to ensure the safety and accuracy of information assets.
• 2. We handle information assets in accordance with the Tokyo Metropolitan Government's Basic Policy on Information Security, relevant laws, and other regulations.
• 3. When outsourcing data processing, we ensure appropriate management as the Tokyo Metropolitan Government.
• 4. We continuously improve our system to maintain and enhance information security.

An English version of the website is available. You can switch to the English site by clicking the “English” link located at the top right of the page.

Personal information sent to the administration office through inquiries will not be used for purposes other than responding to the inquiry. The information will be managed by the administration office and the Tokyo Metropolitan Government and will not be shared with third parties without your permission, except when disclosure is required by law.

All content on this website—including text, illustrations, logos, photographs, videos, software, and other information—is protected by copyright laws and other applicable regulations.