CGM Products are specified by many state Departments of Transportation.

To find out if the product you are interested in is approved in a
particular state, use the following link to go to a listing of State
Transportation Web Sites.

www.fhwa.dot.gov/webstate.htm

Once you have selected a state, in the search area you will need to
search for "Approved Products" or "Qualified Products" and that will
take you directly to the that state's listing of products which are
approved. Alternately, you can search for a particular product by
using, for example, "approved grout" or "qualified grout" as a search
word.