The 2010 ADA Standards for Accessible Design can be found at: https://www.ada.gov/2010ADAstandards_index.htm [2]. 

The Department of Justice’s ADA web site, www.ada.gov [3], contains a number of useful documents on accessibility for businesses and state and local governments. For example, for businesses see “ADA Update: A Primer for Small Business” and the section on “Making the Built Environment More Accessible” at: https://www.ada.gov/regs2010/smallbusiness/smallbusprimer2010.htm [4].   

The U.S. Access Board also produces a number of documents on a wide range of accessibility-related topics which can be found at: www.access-board.gov [5].  For example, check “Guide to Updated ADA Standards” at: http://web.archive.org/web/20130721160340/http://access-board.gov//ada/guide.htm [6]. 

For additional information, take a look at the following resources:

FAQ: How do the 2010 changes to the ADA Standards for Accessible Design impact parking spaces that already exist? [7]

FAQ: What does the ADA require in new construction? [8]

Fact Sheet: Accessible Parking [9]