| Operating a motor vehicle, or for that matter | | | | |
| even a bicycle or other human-powered | | | | Drinking and driving is not the same as drunk |
| vehicle, after consuming alcohol or other | | | | driving or the other terms mentioned earlier. |
| drugs so that mental and motor skills are | | | | Drinking and driving means driving a vehicle |
| impaired is recognized as an act of driving | | | | after consuming an alcoholic beverage, or |
| under the influence (DUI) or drunk driving. | | | | driving while consuming one. Driving after |
| Illegal in most jurisdictions, drunk driving | | | | consuming alcohol is generally not considered |
| is responsible for a large number of deaths, | | | | illegal unless the driver loses his ability |
| injuries, and accidents every year throughout | | | | to drive safely as defined by law. |
| the world. | | | | |
| | | | Even if the driver is not impaired, driving |
| The name of the specific criminal offence, | | | | while consuming alcohol is often illegal. In |
| depending on the jurisdiction, may be driving | | | | some jurisdictions, keeping an open container |
| while intoxicated (DWI), operating while | | | | of an alcoholic beverage in the passenger |
| intoxicated (OWI), operating a motor vehicle | | | | compartment of a motor vehicle is illegal. |
| while intoxicated (OMVI), driving under the | | | | |
| influence [of alcohol or other drugs] (DUI), | | | | In the United States, all states set a BAC |
| or drunk in charge [of a vehicle]. Such laws | | | | limit of 0.08%. Some states, however, slap a |
| are valid for boating or piloting aircraft, | | | | lesser charge, known usually as driving while |
| also. | | | | impaired, on a BAC of around 0.05%. All |
| | | | states charge under-21 drivers who have |
| The guilt of the driver may be established by | | | | committed a drunk driving offence if alcohol |
| subjective tests of his impairment, or the | | | | is detected in their blood (set at .00%, .01% |
| measurement of his blood alcohol content | | | | or .02% to be meaningful). The limit for |
| (BAC). BAC is expressed in terms of | | | | aircraft pilots and commercial drivers is |
| milligrams of alcohol per milliliters of | | | | fixed at 0.04%. |
| blood, or as a percentage. | | | | |