Six Driving 'Laws' Everyone Swears By — And What Your State Actually Says
Photo: S. Clyde, Public domain, via Wikimedia Commons
Ask around at any gathering of American drivers and you'll hear them delivered with total confidence: it's illegal to drive barefoot. You have to signal 100 feet before turning. The left lane is only for passing. Some of these are real laws. Some are folklore that got promoted to statute by sheer repetition — and telling them apart is more interesting than you'd expect.
Barefoot Driving: Legal in All 50 States
Start with the classic. There is no state in the US where driving without shoes is against the law. Not one. The myth is so pervasive that even some police officers believe it, but it exists nowhere in the traffic codes. Where did it come from? Likely a mix of driver's-ed caution and a genuine — but narrow — safety concern: a bare or flip-flopped foot can slip off a pedal, which is a real hazard in a crash-avoidance moment. So while it's legal, it's not necessarily wise. The law won't cite you for bare feet; physics doesn't need a statute.
The Left Lane: Mostly Right, Often Misunderstood
Here's one that's actually law — but with more nuance than most drivers realize. Roughly 30 states have explicit "keep right except to pass" laws, and many more require slower traffic to move over when faster vehicles approach from behind. On many interstate stretches in states like Georgia and Tennessee, it's a ticketable offense to cruise in the left lane without passing.
But the popular version — "the left lane is legally for passing only, everywhere" — oversimplifies a patchwork. In some states the rule applies only on highways with certain speed limits; in others it's a secondary offense an officer can't cite on its own. The folk version is close to true, which is exactly why it spread. It just isn't uniformly true.
The 'Five-Mile Grace Period'
Every driver has heard that you can go five miles per hour over the limit without consequence. There is no such law anywhere. What exists is enforcement discretion — officers and speed cameras have tolerances, and radar readings carry margins of error. That's not a rule; it's a gamble. Some drivers collect speeding tickets for years proving this to themselves.
The 100-Foot Signal Rule
This one's real — mostly. Many state codes specify signaling continuously for at least 100 feet before a turn (in busier traffic districts, sometimes less). But here's what almost nobody knows: in most states, the law requires signaling when it will affect other traffic, which means even lane changes and merges on empty roads carry a legal duty in some jurisdictions. And signaling doesn't grant right-of-way — a common and costly misunderstanding at merge points.
Roundabouts: The New Frontier of Confusion
As roundabouts multiply across the US, so does invented etiquette. The actual rule is simple: traffic already circulating has the right-of-way; you yield on entry and never stop inside the circle. But ask any driver in a newly roundabout-ed suburb and you'll hear competing theories about signaling, lane choice, and who goes "first." The rules are written; the confusion is homegrown.
The Takeaway
Most driving folklore started as decent advice that hardened into "law" through repetition — from parents, driver's ed instructors, and internet comment sections. The fix is cheap: your state's driver's manual is online, free, and shorter than you think. The real rules are often more interesting than the myths anyway.
