He believes underspeeding is just as dangerous as overspeeding, so he pulls the car over.

He walks upto the driver's window. Inside the car, he sees two old ladies in the front and three in the back.

The old lady who is driving asks the cop, "Why have you pulled me over, sir?"

The cop tells her she had not been following the speed limit. She says, "Why, I was going exactly 22 miles per hour" while pointing to a board on the side of the road.

The cop chuckles and says, "Ma'am, that's the route number, not the speed limit."

Embarrassed, the old lady thanks the cop for correcting her and starts the car to move on. Before she drove away, the cop asked her "Ma'am, if I may ask, why are all these ladies so silent? They haven't uttered a word."

The old lady says, "Oh they'll be fine in a while, we just got off route 118."