How is the concept of blood alcohol level defined in the field of road safety?

Question

DentroTest · Accepted Answer

Blood alcohol level is technically the amount or volume of pure alcohol circulating in the bloodstream at a specific moment. It is legally measured in grams of alcohol per liter of blood (g/l) or, through breathalyzer tests, in milligrams of alcohol per liter of exhaled air (mg/l). The options that make a generic reference 'to the body' or 'to the head' are inaccurate and incorrect from the medical and regulatory point of view. In the driving of trucks and heavy vehicles, the maximum limits permitted are more restrictive (0.15 mg/l in air and 0.30 g/l in blood) because of the great risk inherent in the tonnage and dimensions of the vehicle.

How is the concept of blood alcohol level defined in the field of road safety?

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