Pennsylvania One of Many States that enforces Right Lane for Slower Traffic

The words 'move over' -- even if readable in the rearview mirror -- may not mean much to them, but a ticket might. Some states are cracking down.

By Christopher Solomon

In these days of longer commutes and simmering tempers, nothing seems to set off already-testy motorists like the left-lane camper -- the guy or gal who drives in the passing lane and bars faster drivers from easily passing. Web sites have cropped up to educate other drivers, or to vent. There's a (somewhat painful) YouTube song called "Keep Right."

Even bigwigs get frustrated. Pennsylvania Gov. Edward Rendell, weary of having his limo slowed down by such left-lane pokies, ordered an aide to have the Pennsylvania Turnpike Commission install signs a few years ago reading "Keep Right, Pass Left. It's the Law."

And now some states are cracking down on left-lane campers, both to keep traffic moving and to tamp down the road rage that goes from zero-to-60 faster than ever before.

That's not just a pretext. Last year, a driver was arrested on Interstate 79 outside Pittsburgh after allegedly brandishing a semiautomatic pistol at a driver who was on his tail.