A History of Drunk Driving Laws

The drunk driver is older than the car. Long before the automobile, the law already worried about people steering carriages and locomotives while drunk. But turning that worry into effective law took a full century, a clever machine that could measure a breath, and the fury of a grieving mother. The history of drunk-driving law is really the story of how society learned to take a familiar danger seriously⁴.

Drunk at the reins

The danger of drinking and driving did not begin with the engine. Britain’s Licensing Act of 1872 already made it an offence to be drunk while in charge of a carriage, a horse, cattle or a steam engine⁶. When automobiles arrived, the law hurried to catch up: in 1910 New York became the first US state to pass a law specifically against drunk driving, and other states quickly followed⁵.

But these early laws shared a crippling weakness. They forbade driving while “intoxicated” without any way to prove it. Everything rested on a police officer’s judgement — the smell of drink, slurred speech, an unsteady walk — which was subjective, easy to dispute in court, and wildly inconsistent.

The machine that could measure a breath

The breakthrough was technological. In the 1930s the Indiana chemist Rolla Harger developed the “Drunkometer,” patented in 1936, which estimated blood-alcohol level from a breath sample — and in 1938 the figure of 0.15 percent became the first widely accepted legal limit⁵. Then, in 1954, former state police captain Robert Borkenstein invented the Breathalyzer, a compact, reliable device that made roadside breath testing practical².

For the first time, drunkenness behind the wheel could be turned into a number — hard evidence that would stand up in court. The blurry offence of “driving drunk” became the precise, provable offence of driving over a set blood-alcohol concentration.

Setting the limit

Once intoxication could be measured, the argument shifted to where to draw the line — and over the decades the line kept falling. The early standard of 0.15 percent gave way to 0.10, and then to the 0.08 percent that the United States adopted nationally, with all fifty states in line by 2004³. The trend continues: in 2018 Utah lowered its limit to 0.05 percent, the strictest in the nation and in line with much of Europe.

MADD and the cultural shift

Better science alone did not change behaviour; a change in culture did. In 1980, after her 13-year-old daughter was killed by a repeat drunk driver, Candace Lightner founded Mothers Against Drunk Driving¹. MADD turned private grief into a formidable movement that reframed drunk driving as not a mishap but a violent, preventable crime.

Death and injury from drunk driving are 100 percent preventable.— a guiding conviction of the anti-drunk-driving movement¹

The results were sweeping. MADD’s campaigning helped push through the National Minimum Drinking Age Act of 1984, which used federal highway funds to pressure every state into raising the drinking age to 21, and drove tougher penalties, sobriety checkpoints and relentless public-awareness campaigns¹. Within a generation, “one for the road” went from a harmless phrase to something close to taboo.

The long road to sober driving

The effort worked. Alcohol-related road deaths fell dramatically from their peak as limits tightened, enforcement improved and attitudes hardened³. The fight is not over — impaired driving still kills — but the journey from a subjective sniff-test to precise legal limits and zero social tolerance is one of the clearest cases of law, science and public pressure combining to save lives. It is also a reminder that enjoying wine responsibly has always meant knowing when to hand over the keys.

Frequently asked questions

Read more

• Temperance and wine
• The history of healthcare with wine
• A history of minimum drinking-age limits

References

1. Encyclopaedia Britannica — Mothers Against Drunk Driving (MADD). www.britannica.com ↩
2. Encyclopaedia Britannica — Breathalyzer. www.britannica.com ↩
3. National Highway Traffic Safety Administration (NHTSA) — Drunk Driving. www.nhtsa.gov ↩
4. SafeWise — When Did Drunk Driving Become Illegal? www.safewise.com ↩
5. Low Cost Interlock — When Did DUI Laws Start? The Definitive History. www.lowcostinterlock.com ↩
6. DWI Springfield — A Brief History of America’s Drunk Driving Laws. www.dwispringfield.com ↩

Recommended reading

A Short History of Wine
Rod Phillips
Places drinking, and society’s efforts to regulate it, in the long human history of wine and alcohol.

A History of the World in 6 Glasses
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A sweeping look at how alcohol has shaped — and been governed by — human society.

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