The Hackettstown Police Department is getting into the holiday spirit through a speed radar.
"Santa is still making his naughty and nice lists," a Facebook post from the department reads. When drivers speed past the radar above the legal limit, the sign reads "naughty." When someone is driving a proper speed, they receive a "nice" reading.
"Don't make the naughty list, please drive nice!" the post continues.
Other festive New Jersey traffic signs include a "Don't be a grinch; let them merge" suggestion and an "Only Rudolph should be lit" anti-drug warning.
Police in Vermont did the same thing a few years ago...