The Data Interchange for Materials Engineering (DIME) website has been developed in compliance with Section D of the California Government Code 11135. Code 11135 requires that all electronic and information technology developed or purchased by the State of California Government is accessible to people with disabilities. There are various types of physical disabilities that impact user interaction on the web. Vision loss, hearing loss, limited manual dexterity, and cognitive disabilities are examples, with each having different means by which to access electronic information effectively. Our goal is to provide a good web experience for all visitors.

We are constantly updating our content and striving to make it accessible. If you have any questions or suggestions, please contact the DIME Administrator.

To learn more about Caltrans' commitment to accessibility, visit the Caltrans accessibility information page.

Accessibility Standard

This website adheres to WCAG 2.0 AA Guidelines and Success Criteria organized under the following principles:


  • Provide text alternatives for non-text content.
  • Provide captions and other alternatives for multimedia.
  • Create content that can be presented in different ways, including by assistive technologies, without losing meaning.
  • Make it easier for users to see and hear content.


  • Make all functionality available from a keyboard.
  • Give users enough time to read and use content.
  • Do not use content that causes seizures.
  • Help users navigate and find content.


  • Make text readable and understandable.
  • Make content appear and operate in predictable
  • Help users avoid and correct mistakes.


  • Maximize compatibility with current and future user tools
  • These additions increase the level of accessibility and empowerment to our audience in creating a fully accessible website and documents for the enjoyment of all.

Accessible Features

Below is a list of some of the technology solutions we have integrated to make our website easy to navigate, fast-loading, and accessible.

Skip to Main Content

Used to jump to the main content area. To visually see the link in the upper left corner of the webpage, press the Tab key.


Uses Alternative Text “ALT” and/or “TITLE” attributes. ALT/TITLE attributes provide a written description of the image, which is accessible to screen readers, and it is visible when the mouse is placed over the image. This is also useful for people who have images turned off on their browser, in which case a description will display where the image used to be.

Keyboard Shortcuts

Difficulty Accessing Material

If you have difficulty accessing any material on this site, please contact us in writing and we will work with you to make the information available. You can direct your request to the DIME Administrator. For more information regarding how to file an ADA grievance with the California Department of Transportation, please visit the Caltrans accessibility information page.

Contact Us

You may write, email or call us at the location below or visit the contact page.

Materials Administrator
Materials Engineering & Testing Services
5900 Folsom Blvd. MS-5
Sacramento, CA 95819
Phone: (916) 227-5238