The Highway Patrol became concerned about a stretch of Interstate Highway, where motorists regularly exceeded the posted speed limit by 20 mph or more, so the captain directed they set up a "speed trap."
On the day of the operation, the troopers were amazed that all the motorists were at or below the posted limit. They couldn't figure out why driver behavior had so radically changed, so quickly.
The sergeant decided to drive the stretch of highway in an unmarked car, and about a mile before the operation, he saw a 13 year old boy with a sign, that read "Speed Trap Ahead. Slow Down,"
He drove on to the next exit, where the first boy's 11 year old brother was standing with a bucket full of money, and another sign that read "Tips."
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