Q. Comparison of State DUI/DWI Laws
You can find a comparison of state DUI/DWI laws on the web site of the Insurance Institute for Highway Safety (IIHS): http://www.iihs.org/laws/state_laws/dui.html
(Note: The above private-sector site is not maintained by US DOT or any other US Government office. We take no responsibility for the content or accuracy of any non-US DOT web page, and offer the above link strictly as a courtesy, should you be interested.)
You may also want to contact your state DOT directly.
Links to state Departments of Transportation and/or state government web sites are available on: