01-009 · EVIDENCE B · SOURCE-SENSITIVE
Don’t speed or drive after drinking
开车不超速、不酒驾
There’s no direct cost. Driving a bit slower adds just a few minutes to each trip. The hard part is drinking less at social gatherings.
On average, for every 1% increase in speed, the chance of a fatal crash rises by roughly 4%. There is no “safe” level of alcohol consumption when it comes to driving; even very low blood alcohol concentrations already raise the risk of accidents.
B
Move “Don’t speed or drive after drinking” to Future Me's calendar
The excuse
Future Me has a clearer calendar, more patience, and apparently the same responsibilities.
What feels good now
Today I keep a few minutes, a bit of persistence and avoid interrupting my default routine.
What the source says
The source summarizes the return this way: “On average, for every 1% increase in speed, the chance of a fatal crash rises by roughly 4%. There is no “safe” level of alcohol consumption when it comes to driving; even very low blood alcohol concentrations already raise the risk of accidents.” Evidence grade B. The original states the population, caveats, and sources; this is not a personal forecast.
Use the original facts and limits. For an urgent medical, safety, financial, or legal issue, contact a qualified local professional or service.
THE ENGLISH EDITION
Original recommendation and evidence
9. Don’t speed or drive after drinking
Cost: There’s no direct cost. Driving a bit slower adds just a few minutes to each trip. The hard part is drinking less at social gatherings.
In plain terms: On average, for every 1% increase in speed, the chance of a fatal crash rises by roughly 4%. There is no “safe” level of alcohol consumption when it comes to driving; even very low blood alcohol concentrations already raise the risk of accidents.
Benefit: According to the World Health Organization (WHO), a 1% rise in average speed translates to a 4% increase in the likelihood of fatal crashes. The risk of a fatal crash also climbs steadily as blood alcohol concentration rises, even at very low levels.
Evidence grade: B
Sources: WHO (2025). Road traffic injuries fact sheet. <https://www.who.int/news-room/fact-sheets/detail/road-traffic-injuries>
Notes: The 1% and 4% figures linking speed to fatalities come from accident modeling rather than controlled trials. For alcohol and driving, WHO only provides a general trend without specific numerical values. This section does not verify any original research on exactly how much drinking raises risk.
Read the complete Chinese source and notes
9. 开车不超速、不酒驾
成本: 不花钱。开慢一点，一趟多花几分钟。难的地方是饭局上少喝。
说人话: 平均车速每高 1%，撞死人的概率高约 4%。酒精没有「喝一点没事」的安全线。血里的酒精浓度还很低的时候，风险就已经开始往上走了。
收益: 世界卫生组织（WHO）的说法：平均车速每升高 1%，出人命的事故风险升高 4%。酒驾的风险，从很低的血液酒精浓度起就开始上升
证据等级: B
来源: WHO (2025). Road traffic injuries fact sheet. <https://www.who.int/news-room/fact-sheets/detail/road-traffic-injuries>
备注: 速度和死亡的那组 1%、4%，是按事故模型推算出来的，不是随机分组的试验。酒驾这边 WHO 只给了方向，没给数字。「喝多少、风险涨多少」这个问题，本节没有核实过原始文献。
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