>[!abstract] >More than half of motorists rate themselves as above-average drivers, which is mathematically impossible. |Study|Sample|Finding| |---|---|---| |Williams (2003)|909 drivers|673 (≈74%) rated themselves above average ([en.wikipedia.org](https://en.wikipedia.org/wiki/Illusory_superiority?utm_source=chatgpt.com "Illusory superiority"))| |Svenson (1981)|161 students in U.S./Sweden|93% (U.S.) rated above-average skill, 88% safety| |Roy & Liersch (2014)|Controlled self-assessment|People use personal definitions of “good driving”| >[!related] >- **North** (upstream): — >- **West** (similar): — >- **East** (different): — >- **South** (downstream): —