&gt; Driving that far under causes people to start behaving irrationally resulting in lots of lane changes&#x2F;tailgaiting etc. This can be dangerous when lots of cars are doing it.<p>This is one of those examples of an explanation rather than a justification.<p>If someone else is going slow, that&#x27;s no excuse to start acting like an idiot, and if you do and you get in an accident, that&#x27;s on you, not the slow driver.