The Real Reason Left Lanes Are For Passing — And Why Camping There Causes Chaos
It's not just etiquette. Sitting in the left lane sets off a chain reaction most drivers never see coming.
You're cruising in the left lane, going the speed limit, minding your business. What's the harm? More than you'd think, according to the way traffic actually flows.
The left lane works best as a passing lane. When someone sits in it at a steady speed, faster traffic bunches up behind, then starts weaving right to get around — and weaving is where crashes happen.
That single slow car creates a moving roadblock. Cars pile up, brake lights ripple backward, and a smooth flow turns into an accordion of stop-and-go frustration for everyone behind.
The fix is simple and courteous: pass, then move back right. Keeping the left lane open for passing keeps everyone moving predictably — and predictable is exactly what a safe highway needs.
