Granny has it!

Sitting on the side of the highway waiting to catch speeding drivers, a Police Officer sees a car puttering along at 22 KPH. He says to himself, "this driver
is just as dangerous as a speedster!"

So he turns on his lights and pulls the driver over. Approaching the
Car, he notices that there are five old ladies - two in the front seats and
three in the back - wide eyed and white as ghosts.

The driver, obviously confused, says to him "Officer, I don't
Understand, I was doing exactly the speed limit! What seems to be the problem?"

"Ma'am," the officer replies, "you weren't speeding, but you should know that
driving slower than the speed limit can also be a danger to other drivers.."

"Slower than the speed limit? No sir, I was doing the speed limit
Exactly.. Twenty-two kilometres an hour!" the old woman says a bit proudly.

The Police officer, trying to contain a chuckle explains to her that 22
Was the highway number, not the speed limit. A bit embarrassed, the
Woman grinned and thanked the officer for pointing out her error.

"But before I let you go, Ma'am, I have to ask.. Is everyone in this car OK?
These women seem awfully shaken and they haven't made a peep this whole time,"
the officer asks.

"Oh, they'll be all right in a minute officer. We just got off Highway 189."