Rigs keep on trucking, searching for parking

On any given night, the shoulders of interstates leading into big cities like New York, Los Angeles, Chicago and Baltimore are lined with long glistening strands of parked 18-wheelers.

These are the trucks that couldn't get a space in nearby rest stops or truck stops because those roadsides oases are already packed with resting big rigs.

"I have never seen it this bad," says John Taylor, who has been a trucker for 55 years, operating mostly in Kansas and elsewhere in the Midwest. "Sometimes all we can do is park on an exit or entrance ramp."

Thanks to a strong economy, more trucks than ever are moving on the nation's...