TRENTON, New Jersey (WPVI) -- It turns out that a nice gesture toward police is actually a violation of federal policy.
Several New Jersey towns were told to stop adding blue streaks of paint down the middle of the road.
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The blue center lines were meant to honor law enforcement.
But the highway administration requires the pavement to be visible in the space between the yellow lines.
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All towns were told to get rid of the blue paint. It's unclear what happens if they don't.