From Lacey's Spring to Huntsville, it's a drive that might be more costly if you're not careful. Police are on patrol in what's known as "Gasoline Alley." At times it seems more like a speedway than a highway.

Troopers have taken notice. The attempt to save work crews the focus of this investigators report.

Highway 231. Gasoline Alley--the spot with the Tennessee River bridge as a backdrop, where construction never ends, and traffic flies.

So fast, in fact, there's an electronic reminder begging your responsibility to slow down, but don't be fooled. It's not a matter of honor only.

State troopers are spending extra time in "The Alley." In addition to normal shifts, troopers, while off state duty, are working overtime in 10 hour shifts paid by the federal government. The work is dedicated to this particular stretch of highway because construction and speed make a dangerous combination.

"About two years ago we had roughly 27 people killed in construction zones," State Trooper Curtis Summerville says. "Often times we do have fatal wrecks in construction zones. If you think about it, the workers are sometimes working in the roads. Their backs are to the roadway. They don't see traffic approaching them from the back and sometimes they are hit or nearly hit just by simply doing their jobs."

If you get caught speeding in a construction zone, the ticket cost doubles, but that only applies when crews are actually on the job.