Driving under the influence


July 5, 2022

Driving under the influence (or driving under the influence of drugs or impaired driving) is the offense or offense of operating or controlling a motor vehicle while impaired by alcohol or other drugs (including recreational drugs such as cannabis and those prescribed by doctors) to a level that renders the driver unable to drive safely.


The criminal offense may not involve the actual driving of the vehicle, but may instead include physically being "in the driver's seat" of a car while intoxicated, even if the person charged is not driving. conduct,. For example, a person found in the driver's seat intoxicated and holding the car keys, even when parked, may be fined for being in control of the vehicle. Merriam Webster's Dictionary defines "driving under the influence" (DUI) in the United States as "the act or crime of driving a vehicle while under the influence of alcohol or drugs" . In some countries (including Australia and many jurisdictions across the United States), a person can be charged with a criminal offense for riding a bike, skateboard or horse while intoxicated or under the influence of alcohol. Contrary to English-speaking countries, in France the term driving under the influence is preferred to that of driving under the influence, in particular in the event of an offense of driving under the influence of an alcoholic state or Violation of driving under the influence of an alcoholic state.


Along with alcohol consumption, a drunk driver's level of intoxication is usually determined by a blood alcohol measurement but it can also be expressed as a breath test measurement, often referred to as BrAC. A BAC or BrAC measurement exceeding the specific threshold, such as 0.08%, defines the criminal offense without the need to prove impairment. In some jurisdictions, there is an aggravated category of violation at a higher BAC, such as 0.12%, 0.15%, or 0.25%. A jurisdiction, such as the US state of Colorado, can impose a maximum blood THC content for drivers who have used cannabis, but this has been difficult to enforce. In some countries, blood alcohol content is measured in grams per liter of blood, with 0.5 g/L similar to a rate of 0.05%. The per thousand is also used with 0.5‰ 0.05%.

Blood alcohol content

Effects of alcohol on driving ability

Drinking enough alcohol to have a blood alcohol level of 0.03 to 0.12 percent usually causes a flushed appearance on the face and impaired judgment and fine muscle coordination. A blood alcohol level of 0.09% to 0.25% causes lethargy, sedation, balance problems and blurred vision. A blood alcohol level of 0.18% to 0.30% can cause profound confusion, slurred speech, dizziness and vomiting. A blood alcohol level of 0.25% to 0.40% can cause stupor, loss of consciousness, anterograde amnesia, vomiting and respiratory depression (potentially fatal). A blood alcohol level of 0.35% to 0.80% can lead to coma, life-threatening respiratory depression or even fatal alcohol poisoning. There are a number of factors that affect blood alcohol levels, including weight, the length of time the alcohol is drunk, and whether the subject ate during the drinking period.

Quantification of alcohol

The breathalyzer is a device for estimating the blood alcohol level from a breath sample. It was invented by Robert Frank Borkenstein and registered as a trademark in 1954 under the name