The Real Risks Behind Drinking and Driving
Last reviewed: 2026 · Driviology Road Safety Education Team
Quick Answer
Drinking and driving risks compound quickly because alcohol affects judgment, reaction time, and coordination all at once, and these effects begin well before a driver reaches the legal limit.
The risks of drinking and driving are often described in terms of legal limits, but the underlying danger comes from how alcohol affects several driving skills simultaneously.
Multiple Skills Affected at Once
Alcohol reduces reaction time, impairs judgment, and reduces coordination together, which is why even a small amount noticeably raises collision risk.
Risk Begins Before the Legal Limit
See our guide to blood alcohol concentration for how BAC is measured; impairment begins well before reaching the legal threshold, not suddenly at it.
Reducing the Risk to Zero
The only way to fully eliminate the risk is not driving after drinking at all, using a designated driver, taxi, or rideshare instead.