Speed limit

Cop pulls over a car for driving too slow.

Cop walks up to the car & sees an elderly woman behind the wheel.

Cop: Excuse me ma'am, can you tell me why you were driving so slow on the highway?

Driver: Officer, I was only going the speed limit. There was a sign back a half mile that said the it was 14mph.

Cop: Ma'am, the speed limit is 55mph, the sign you saw was for this road, Highway 14.

Driver: Oh my, that makes a lot of sense now. I apologise & I'll make sure I look closer at the signs.

The cop then looks around the car & notices that all of the passengers look like they've seen a ghost.

Cop: Is everyone alright?

Driver: Oh yes. They'll be fine. They always have that look on their face after I drive on highway 151.