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米国リハビリテーション法 508条と WCAG1.0 の対応状況

条文対応一覧表

508条WCAG1.0 との対応状況を一覧表にしてみました。以下、条文は全て Section 508 Standards (www.section508.gov) および Web Content Accessibility Guidelines 1.0 (www.w3.org) からの引用です。

-スタンダード条文対応する WCAG 1.0 チェックポイント
(a) A text equivalent for every non-text element shall be provided (e.g., via "alt", "longdesc", or in element content). 1.1 Provide a text equivalent for every non-text element (e.g., via "alt", "longdesc", or in element content). This includes: images, graphical representations of text (including symbols), image map regions, animations (e.g., animated GIFs), applets and programmatic objects, ascii art, frames, scripts, images used as list bullets, spacers, graphical buttons, sounds (played with or without user interaction), stand-alone audio files, audio tracks of video, and video. [Priority 1]
(b) Equivalent alternatives for any multimedia presentation shall be synchronized with the presentation. 1.4 For any time-based multimedia presentation (e.g., a movie or animation), synchronize equivalent alternatives (e.g., captions or auditory descriptions of the visual track) with the presentation. [Priority 1]
(c) Web pages shall be designed so that all information conveyed with color is also available without color, for example from context or markup. 2.1 Ensure that all information conveyed with color is also available without color, for example from context or markup. [Priority 1]
(d) Documents shall be organized so they are readable without requiring an associated style sheet. 6.1 Organize documents so they may be read without style sheets. For example, when an HTML document is rendered without associated style sheets, it must still be possible to read the document. [Priority 1]
(e) Redundant text links shall be provided for each active region of a server-side image map. 1.2 Provide redundant text links for each active region of a server-side image map. [Priority 1]
(f) Client-side image maps shall be provided instead of server-side image maps except where the regions cannot be defined with an available geometric shape.9.1 Provide client-side image maps instead of server-side image maps except where the regions cannot be defined with an available geometric shape. [Priority 1]
(g) Row and column headers shall be identified for data tables. 5.1 For data tables, identify row and column headers. [Priority 1]
(h) Markup shall be used to associate data cells and header cells for data tables that have two or more logical levels of row or column headers. 5.2 For data tables that have two or more logical levels of row or column headers, use markup to associate data cells and header cells. [Priority 1]
(i) Frames shall be titled with text that facilitates frame identification and navigation. 12.1 Title each frame to facilitate frame identification and navigation. [Priority 1]
(j) Pages shall be designed to avoid causing the screen to flicker with a frequency greater than 2 Hz and lower than 55 Hz. 7.1 Until user agents allow users to control flickering, avoid causing the screen to flicker. [Priority 1]
(k) A text-only page, with equivalent information or functionality, shall be provided to make a web site comply with the provisions of this part, when compliance cannot be accomplished in any other way. The content of the text-only page shall be updated whenever the primary page changes. 11.4 If, after best efforts, you cannot create an accessible page, provide a link to an alternative page that uses W3C technologies, is accessible, has equivalent information (or functionality), and is updated as often as the inaccessible (original) page. [Priority 1]
(l) When pages utilize scripting languages to display content, or to create interface elements, the information provided by the script shall be identified with functional text that can be read by assistive technology. 6.3 Ensure that pages are usable when scripts, applets, or other programmatic objects are turned off or not supported. If this is not possible, provide equivalent information on an alternative accessible page. [Priority 1]
(m) When a web page requires that an applet, plug-in or other application be present on the client system to interpret page content, the page must provide a link to a plug-in or applet that complies with §1194.21(a) through (l). なし。6.3 は関連します。
(n) When electronic forms are designed to be completed on-line, the form shall allow people using assistive technology to access the information, field elements, and functionality required for completion and submission of the form, including all directions and cues. なし。9.4 や 10.2 は関連します。
(o) A method shall be provided that permits users to skip repetitive navigation links. 13.6 Group related links, identify the group (for user agents), and, until user agents do so, provide a way to bypass the group. [Priority 3]
(p) When a timed response is required, the user shall be alerted and given sufficient time to indicate more time is required. なし。

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