Most "areas that make laws" ("jurisdictions") started with DWI (driving while intoxicated) laws, banning just alcohol. Later, most changed them to DUI (driving under the influence) laws, adding other drugs to those banned while driving. The most common blood alcohol content (BAC) limit in the United States is 0.08% for the legal meaning of drunk. Only three states still use the more lax, original standard of 0.10%. Many jurisdictions add extra penalties (more jail time and/or a longer DUI program) in cases where the driver's BAC is over 0.20%.