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Table 2-26. Number of States with Different Types of Anti-DUI/DWI Legislation in Effect as of January 1 of the Listed Year

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^a Per se law makes it illegal in and of itself to drive with an alcohol concentration measured at or above a certain level.
^b States that impose additional thresholds for ALR beyond those imposed for DUI/DWI are not included in these figures.
^c Includes the District of Columbia.

KEY: BAC = blood alcohol concentration; DUI = driving under the influence; DWI = driving while intoxicated.

NOTE: National Uniform Minimum Drinking Age Act, which standardized the minimum drinking age at 21, was enacted in 1984.

SOURCES:
0.02 BAC and Administrative license revocation:
1986-98: U.S. Department of Transportation, National Highway Traffic Safety Administration, Traffic Safety Programs, Research and Evaluation Division, personal communications, Apr. 9 1999 and Oct. 4, 1999.
1999-2000: Ibid. Impaired Driving Division, personal communications, May 22, 2000.
0.08 BAC: Ibid. Presidential Initiative for Making 0.08 BAC the National Legal Limit, A Progress Report, Internet site http://www.nhtsa.dot.gov/people/injury/alcohol/limit.08/08progressreport/index.html, as of May 19, 2000.