CDL General Knowledge Test 2026 – 400 Free Practice Questions to Pass the Exam

The body processes alcohol at a generally consistent rate, which is approximately one standard drink per hour for the average person. A standard drink is typically defined as containing about 0.6 ounces of pure alcohol, found in a typical beer, glass of wine, or shot of liquor.

When considering four standard drinks, it generally takes about four hours for the body to metabolize and eliminate the alcohol from these drinks. This understanding aligns with the body's metabolic rate, which is key in determining how long it takes to clear alcohol from the system.

Therefore, the answer of four hours reflects a common rule of thumb regarding alcohol metabolism, making it a reasonable estimate for the time required to eliminate the effects of four drinks from the body.