MADISON (WKOW) -- The Wisconsin State Patrol won't just be keeping an eye on drivers from the ground this Labor Day weekend, but also from the air.
Travel this weekend is expected to be at its highest level nationally since the recession. AAA predicts 34.1 million people will travel at least 50 miles from home.
Planes will circle Wisconsin's highways looking for traffic violations, like speeding, aggressive driving and tailgating. When aerial officers see a violation, they radio to a trooper on the ground who will go after the driver. They estimate speed by calculating the time it takes a car to get from one road marking to the next.
"This is extremely accurate, a technical stop watch if you will," says Ryan Chaffee, with Wisconsin State Patrol. "Its just taking the distance and dividing it by your time to calculate the speed."
Aerial traffic enforcement is going on all over the state's main highways. In some areas, there are signs up to warn drivers of the air enforcement zones.
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